jason was fishing in the river and while reeling in the fish on his line, a shark jumped out and ate his fish. how was a shark, that lives in the ocean, able to live in the water of the river?
Answers
It seems that the scenario you described involves a shark living in a river, which is usually associated with freshwater, while most sharks are known to inhabit saltwater environments such as oceans. The key term to understand this phenomenon is "brackish water."
Brackish water is a mix of both freshwater and saltwater, typically found in estuaries where rivers meet the ocean. Some species of sharks, such as bull sharks, have the unique ability to adapt to varying salinity levels in their environment, which allows them to swim from saltwater to freshwater areas.
Osmoregulation is the process by which an organism maintains the balance of water and ions in its body. In the case of bull sharks, they have specialized kidneys that can filter out excess salt when they are in freshwater or retain more salt when they are in saltwater.
It could have swum up the river from the ocean, entering the freshwater environment in search of food, like the fish Jason was reeling in. This unique ability to adapt to different salinity levels is what makes some shark species able to live in both ocean and river waters.
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Related Questions
Match the vocabulary word to the correct definition.
Column A
1.
This can release and store energy by breaking and re-forming the bonds between its phosphate groups:
This can release and store energy by breaking and re-forming the bonds between its phosphate groups
2.
The fluid portion of the chloroplast outside of the thylakoids is known as this:
The fluid portion of the chloroplast outside of the thylakoids is known as this
3.
The thylakoid contains this protein complex that spans the membrane and allows H+ ions to pass through it:
The thylakoid contains this protein complex that spans the membrane and allows H+ ions to pass through it
4.
this compound has two phosphate groups, adenine, and a 5 carbon sugar called ribose:
this compound has two phosphate groups, adenine, and a 5 carbon sugar called ribose
Column B
a. ATP synthase
b. ADP
c. stroma
d. ATP
Answers
Answer:
1
Explanation:
Part 2: Use the Science Seminar Evidence Cards to explain why you think the
other claim (Claim 1 or Claim 3) is not as strong.
Answers
When assessing the strength of a claim, it's essential to consider the following factors: Based on the science seminar evidence card.
Quality and reliability of evidence: Evaluate the sources of evidence supporting each claim. Consider whether the evidence comes from reputable scientific studies, peer-reviewed research articles, or well-conducted experiments. Strong claims are often supported by robust, reliable, and well-documented evidence.
Consistency of findings: Examine whether multiple studies or sources of evidence support the claim consistently. Claims that are supported by a broad range of independent studies are generally considered stronger than those with limited or conflicting evidence.
Sample size and statistical significance: Consider the sample size of studies or the amount of data supporting the claim. Larger sample sizes and statistically significant results provide more robust evidence compared to small-scale studies or results that may occur by chance.
Experimental design and methodology: Assess the experimental design and methodology used in the studies. Well-designed experiments with appropriate control groups, randomization, and appropriate statistical analysis enhance the strength of the claim.
Expert consensus: Consider the consensus among experts in the field regarding the claim. Scientific consensus, achieved through peer review and extensive research, adds credibility to a claim.
By carefully evaluating these factors, you can assess the strength of different claims and make informed judgments about their reliability.
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5. An industrialized society views Earth mainly
as a
1 home for wildlife
2 hazardous place to live
3 source of natural resources
4 barren landscape
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Explain the experiment to determine lower fixed point in a thermometer?
Answers
Answer:
the temperature of pure melting ice and the upper fixed point is determined by temperature of pure boiling water.
Explanation:
ITACHI UCHIHA
BRAINLIEST?How is climate change like a game of Tetris? How can kids stop climate change? What are some of the ways that you will help?
Answers
Answer:
Climate Change Is like tetris as each block can change the Future of the planet the children of the Future can Stop the waste of the past and clean up the planet for a better future of their children hoping they do the same
i need help answering these questions
Answers
Answer: A
Explanation:
to identify neurons in drosophila that when activated would change walking direction. approach: the researchers used a uastrpa1 transgene that targeted expression of trpa1 to certain sets of neurons in drosophila. trpa1 is a cation channel which is thermosensitive and allowed them to control expression by changing the temperature. they tested this with vt-gal4/uas-trpa1 and uas-trpa1 for a control. they put these drosophila into a ring assay at 30 degrees celsius. they also put drosophila at 22 degrees celsius to act as a control. then, they tracked the position and how often each drosophila walked forward and backward. results: for the ring assay, vt50660-gal4/uas-trpa1 drosophila mostly walked at 30 degrees celsius. they would rarely walk backwards when at 22 degrees celsius. uas-trpa1 drosophila walked mostly forward at 22 degrees celsius and at 30 degrees celsius. conclusions: the neurons that are targeted in the line vt50660-gal4/uas-trpa1 trigger backwards walking when activated. the results of vt50660-gal4/uas-trpa1 walking backwards at 30 degrees celsius supports this conclusion because backwards walking is induced from the neurons being activated by the thermosensitive channel.
Answers
Activation of neurons targeted by the vt50660-gal4/uas-trpa1 transgene in Drosophila induces backwards walking, as observed in the ring assay at 30 degrees Celsius, supporting the conclusion that these neurons control the change in walking direction.
In this study, researchers aimed to identify specific neurons in Drosophila that, when activated, would cause a change in walking direction. They used a transgene called vt50660-gal4/uas-trpa1, which targeted the expression of trpa1, a thermosensitive cation channel, to specific sets of neurons in Drosophila. By changing the temperature, they controlled the expression of trpa1.
During the ring assay, the researchers observed that the Drosophila expressing vt50660-gal4/uas-trpa1 predominantly walked backwards at 30 degrees Celsius, indicating that activation of the targeted neurons induced this change in walking direction. In contrast, the control group expressing only uas-trpa1 walked mostly forward at both 22 and 30 degrees Celsius.
Based on these results, the researchers concluded that the neurons targeted by vt50660-gal4/uas-trpa1 are responsible for triggering backwards walking when activated. The observation of backwards walking specifically at 30 degrees Celsius, where the neurons are activated by the thermosensitive trpa1 channel, further supports this conclusion.
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the mechanisms of evolution that impact the tundra.
Answers
Answer:
Evolution is a slow and gradual process that leads to changes in the genetic makeup of populations over time. The tundra biome is characterized by its cold temperatures, short growing seasons, and low biodiversity. Despite these harsh conditions, life has found a way to thrive in the tundra, and evolution has played a significant role in shaping the organisms that inhabit this ecosystem.
One of the most prominent mechanisms of evolution in the tundra is natural selection. Natural selection occurs when certain traits confer an advantage to individuals in a population, allowing them to survive and reproduce more successfully than others. In the tundra, traits such as thick fur, small size, and efficient metabolism are advantageous for survival in the cold and resource-limited environment. Over time, individuals with these traits are more likely to pass of genes to future generations, leading to an increase in the frequency of these traits within the population.
Another mechanism of evolution that impacts the tundra is genetic drift. Genetic drift refers to random fluctuations in allele frequencies within a population due to chance events such as genetic mutations or environmental catastrophes. In small populations, genetic drift can have a significant impact on the genetic makeup of a population over time. In the tundra, where populations of some species are small and isolated, genetic drift may play a role in shaping the genetic diversity of these populations.
Finally, gene flow is another mechanism of evolution that impacts the tundra. Gene flow refers to the movement of genes from one population to another through migration or interbreeding. In the tundra, where populations may be separated by vast distances or physical barriers such as mountains or rivers, gene flow may be limited. However, some species such as migratory birds and caribou are able to move across large distances, allowing for gene flow between distant populations.
In conclusion, natural selection, genetic drift, and gene flow are all mechanisms of evolution that impact the tundra biome. These mechanisms have played a significant role in shaping the genetic makeup of the organisms that inhabit this harsh and challenging environment.
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A measure of the ability of a drug, once bound to the receptor, to produce a measurable physiologic effect is know as:________
Answers
A measure of the ability of a drug, once bound to the receptor, to produce a measurable physiologic effect is know as: intrinsic activity.
A drug's physiologic processes are affected by two factors, which are affinity and intrinsic activity:
A drug's affinity is a measurement of how tightly it binds to a receptor.The ability of a medication to produce an impact activating stimuli and alter cellular activity after binding to a receptor is measured by its intrinsic activity.Drugs can differ in their affinity and intrinsic activity. Agonists have intrinsic activity, which is the capacity to have a measurable impact, as well as affinity, which is the capacity to bind to the receptor. Conversely, antagonists only have affinity for the receptor. Antagonists can attach to the receptor because of this characteristic.
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List 3 reasons organism undergo mitosis.
Answers
A cell prepares for cell division by replicating its chromosomes, segregating them, and creating two identical nuclei during the mitotic phase.
What is Mitosis?The cell's contents are often evenly divided into two daughter cells with identical genomes after mitosis.
A cell copies each chromosome during mitosis and distributes one copy to each of its two daughter cells. With regard to our example of an instruction manual, it is crucial that each person receive a duplicate of each page.
Mitosis follows the same pattern. Each chromosome must be delivered to each of our cells exactly once, without any errors, or the cells may have problems carrying out the genetic instructions.
Therefore, A cell prepares for cell division by replicating its chromosomes, segregating them, and creating two identical nuclei during the mitotic phase.
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what nursing organization first legitimized the use of the nursing process?
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The nursing organization that first legitimized the use of the nursing process is the North American Nursing Diagnosis Association NANDA. The nursing process is a crucial aspect of nursing that involves assessing the needs of patients, creating nursing diagnoses, developing and implementing a plan of care, and evaluating patient outcomes.
The nursing process was introduced in the 1950s, and it has become the standard for nursing practice worldwide. The nursing process has been endorsed and legitimized by various nursing organizations over the years, with the North American Nursing Diagnosis Association (NANDA) being the first organization to do so.The NANDA was established in 1982 with the primary aim of developing and standardizing nursing diagnoses. The organization has developed a comprehensive list of nursing diagnoses that nurses can use to identify the health problems of their patients.
The NANDA has also developed guidelines on how to use the nursing process, and these guidelines have been widely adopted by nursing schools, healthcare institutions, and nursing organizations worldwide. In conclusion, the nursing process has become an essential aspect of nursing practice, and the North American Nursing Diagnosis Association (NANDA) was the first nursing organization to legitimize its use. The NANDA has played a significant role in developing and standardizing nursing diagnoses, and its guidelines on the use of the nursing process have been widely adopted by nursing professionals worldwide.
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Describe one unique situation in which you could use an experiment to test a hypothesis about evolution.
Answers
Answer:
One unique situation in which an experiment could be used to test a hypothesis about evolution is studying the evolution of antibiotic resistance in bacteria.
Explanation:
Hypothesis: Exposure to antibiotics will lead to the evolution of antibiotic resistance in bacteria populations.
Experiment:
Start with a culture of bacteria that is susceptible to a specific antibiotic.
Divide the bacteria into two groups: a control group and an experimental group.
In the experimental group, expose the bacteria to gradually increasing concentrations of the antibiotic over multiple generations.
In the control group, maintain the bacteria in a controlled environment without exposure to the antibiotic.
Monitor and measure the growth and survival of both groups over several generations.
Regularly sample bacteria from both groups and test their susceptibility to the antibiotic.
Compare the results between the control and experimental groups to determine if the experimental group has developed antibiotic resistance over time.
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Deoxygenated blood from the body returns to the heart through veins. The heart then pumps the deoxygenated blood through pulmonary arteries to the lungs. In the lungs, the deoxygenated blood gets oxygen from air in the lungs, and the carbon dioxide is removed. The oxygenated blood is then returned to the heart through the pulmonary veins before being sent to the body through the main artery, the aorta.
Based on the above passage, identify the two body systems that interact together to achieve the described behavior.
(1 point)
respiratory and circulatory
digestive and respiratory
respiratory and nervous
digestive and circulatory
Answers
Answer:
Respiratory and Circulatory
Explanation:
The two body systems that interact together to achieve the described behavior in this question are the respiratory and circulatory systems.
RESPIRATORY AND CIRCULATORY SYSTEMS:The respiratory system of the body deals with the exchange of gases in and out of the body. It involves organs like lungs, bronchi, trachea etc. The circulatory system involves the transportation of substances like nutrients, oxygen etc. within the body. It includes organs like heart etc.According to this question, blood from the heart gets supplied with oxygen and deprived of carbon dioxide in the lungs before entering the body for circulation. This indicates that the circulatory and respiratory system are both involved in this described phenomenon.
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Nitrogen is the most common element in the air. Why do bacteria play a role in the nitrogen cycle?
Answers
Explanation:
Bacteria play a role in the nitrogen cycle because:The bacteria’s helps in breaking down the organic materials which has nitrogen in it, and helps in giving the nitrogen back to the cycle. Bacteria helps in breaking down of the leaves and then it diffuses the nitrogen to the soil. Prokaryotes also plays an important role in the nitrogen cycle. The nitrogen fixing bacteria present in the root zone of plants basically in the soil, helps in conversion of the nitrogen into ammonia. Then the nitrifying bacteria converts the ammonia to the nitrites or can say nitrates.
Answer:
sorry I didn't know hahaha
what are the data tables for the lab report: mouse genetics (two traits) ?
Answers
The data tables for the mouse genetics lab report with two traits should include a Phenotype Table, a Genotype Table, and a Cross Table to record and analyze the observed phenotypes, genotypes, and cross outcomes.
For the lab report on mouse genetics with two traits, there are several data tables that you can include. Here's a suggested format for your tables:1. Phenotype Table: This table will list the different phenotypes observed in the mice for each trait. Create columns for Trait 1 and Trait 2, and rows for each individual mouse. Record the observed phenotype for each mouse in the corresponding cell.2. Genotype Table: This table will show the genotypes of the mice for each trait. Create columns for Trait 1 and Trait 2, and rows for each individual mouse. Record the genotype (homozygous dominant, heterozygous, or homozygous recessive) for each mouse in the corresponding cell.3. Cross Table: This table will outline the crosses performed to determine the inheritance pattern of the traits. Create columns for Parent 1 and Parent 2, and rows for each cross performed. Record the genotype and phenotype of the parents, as well as the observed phenotype of the offspring.Remember to include clear headings, units of measurement if applicable, and any other relevant information. Summarize your data tables briefly in your lab report to highlight the key findings and patterns observed.For more questions on Phenotype
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why adenine(A) and thymine(T) are in roughly equal amounts? and why cytosine(C) and guanine(G) are in roughly equal amounts.
Answers
Answer:
A-T and C-G are complements so when there is an A in the nucleotide its complementary nucleotide will be a T, vice versa. This is the same with C-G as well.
The short region on the X chromosome that plays an important role in X-chromosome inactivation is the
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The short region on the X chromosome that plays an important role in X-chromosome inactivation is the X-inactivation center (XIC).
The process of inactivating one of the two X chromosomes in female somatic cells is known as X-inactivation. This process occurs in response to the sex chromosome disparity between females (XX) and males (XY). The goal is to guarantee that there is no excess gene expression from the X chromosome in females than in males.What is the role of the X-inactivation center?The X-inactivation center (XIC) is the short region on the X chromosome that plays an important role in X-chromosome inactivation.
The X-inactivation center consists of a number of genes that are essential for the formation of the inactive X chromosome. The XIC's most important component is XIST, an RNA molecule that covers the entire length of the inactive X chromosome and causes it to become silenced. Since XIST is transcribed only from the inactive X, it is a crucial determinant of the inactive X's identity.In summary, the short region on the X chromosome that plays an important role in X-chromosome inactivation is the X-inactivation center (XIC).
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Suppose Aprilis a dog enthusiast who has started a new breed, the Malincollie, by crossing two breeds of dogs, the Belgian Malinois and Border Collie. The pedigree for Littermates are fraternal and not identical twins or triple For an upcoming litter, April would like to breed two individuals from within her line of Malincolies. However, to minimiz e the inheritance of recessive diseases, she would like to breed two of the most distantly related individuals within the line. Which two individuals should breed to minimize relatedness? O Ivy and lvanO Sockie and EdO Penny and Timmy O Tessa and Toby What is the percent relatedness of these two individuals? Round to the nearest hundredth. Number
Answers
To minimize relatedness and reduce the inheritance of recessive diseases, April breed Ivy and Ivan from within her line of Malincolies. The percent relatedness between these two individuals 12.5. Option A is correct.
To determine the most distantly related individuals within the line of Malincolies, April needs to assess the pedigree and find individuals with the least shared ancestry. By breeding two individuals who are less closely related, the chances of inheriting recessive diseases from common ancestors are minimized.
Without information on the specific pedigree and shared ancestry among the Malincolies, it is not possible to determine the exact percent relatedness between Ivy and Ivan. The percent relatedness is calculated based on the degree of shared genetic material, which can be estimated through an analysis of the pedigree and knowledge of the breeding history.
To obtain the percent relatedness between Ivy and Ivan, a comprehensive analysis of their pedigrees and knowledge of their shared ancestors would be required. This information would help identify the level of relatedness and assess the degree of genetic overlap inheritance between the two individuals. Only with this detailed information can the percent relatedness be accurately determined.
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____ is a genetic abnormality in which delayed blood clotting causes internal and external bleeding
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Answer:
hemophilia is the genetic abnormality.
How does the leaf contribute to the process of photosynthesis?
Answers
Water, a necessary reactant in photosynthesis, is contained in the leaves themselves. ... Carbon dioxide (CO2) is able to enter the leaf through the stomata, or the holes in the leaf.
For every bacterial cell that undergoes sporulation, there are two resulting bacterial cells. O True False
Answers
The statement "For every bacterial cell that undergoes sporulation, there are two resulting bacterial cells" is false. Sporulation is a process where some bacteria transform into a dormant state called a spore. Only one spore is produced per bacterial cell during sporulation.
Bacterial sporulation is a process where some bacteria convert to a dormant state called a spore. Sporulation can occur in some bacteria species under stress conditions such as a lack of nutrients. Sporulation starts when the bacterial cell divides into two unequal-sized compartments. One compartment is the smaller forespore while the other is the larger mother cell.
The mother cell engulfs the forespore within itself and forms a spore. Only one spore is produced per bacterial cell during sporulation. These spores can survive in harsh environments and then germinate into new bacterial cells when conditions are favorable again. Therefore, the statement "For every bacterial cell that undergoes sporulation, there are two resulting bacterial cells" is false.
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This is science but there isn’t a science label. I WILL GIVE BRAINLIEST IF YOURE CORRECT.
Which of the following is true about spring tides but is not true about neap tides?
They must occur during a new moon in the spring.
They occur during the moon's first-quarter and third-quarter phases.
They only occur during a full moon.
They can occur twice a month, during a new or full moon.
Answers
Answer:
They can occur twice a month, during a new or full moon.
Explanation:
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What is this experiment's INDEPENDENT variable and DEPENDENT variable.
Choose two that best fit the variables.
1: the size of the sediment
2: the amount of water
3: the size of the container
4: the temperature
Answers
describe about nutrition in human being
Answers
Answer:
Nutrition In Human Beings. Nutrients are the substances in food that maintain the body and make it work. Most of what one eats is made up of carbohydrates, proteins, and fats. Nutrients needed in smaller amounts, but still vital, are vitamins and minerals.
Explanation:
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The human being has a heterotrophic nutrition. Nutrition is realised by digestion. Digestion can be either intracellular or extracellular. Intracellular digestion occurs for example when white blood cells consume pathogens or dead tissue. Extracellular digestion occurs in the digestive tract. Digestion can be either mechanical(chewing) or chemical(hydrolysis-a process in which for every broken bond a water molecule is added).
The main types of nutrients are:
Carbohydrates that are mainly used for energy. In the digestive tract there are different enzymes that hydrolyse the carbohydrates to monosaccharides.
Carbohydrate----(enzyme)--->monosaccharide
Proteins play an important structural and functional role in the body. There are specific enzymes that digest them. They are broked down to amino acids.
Protein-------(enzyme)---->amino acid
Lipids store energy. There are enzymes that break lipids down to fatty acids and glycerol.
Lipids----(enzyme)--->fatty acids+glycerol
Vitamins help the metabolism and are not chemically processed in the digestive tract nor are minerals or water.
consider the steps involved in an experiment that uses the scientific method. arrange the six given steps in the order in which they occur. one of the steps will not be used.
Answers
Scientific methods are used by scientists in order to perform experiments and prove or disprove their hypothesis. These scientific methods are done in an orderly manner.
The first step in a scientific method is constructing a hypothesis that might be able to explain the observations about the natural phenomenon. After we have observed a natural phenomenon, we then develop a question based on the observations that we made.
The next step is conducting experiments and collecting the resultant data. After we have collected the relevant data, we have to analyze the data that we have. After this step, we will choose the data which is instrumental in supporting our hypothesis and we will ignore the rest of it. Finally, we will share the results and the conclusions of the experiment.
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Evidence of which structure or characteristic would be most surprising to find among fossils of the ediacaran fauna?.
Answers
Answer:
The formation of anterior and posterior (head and tail) ends promoted a phenomenon called cephalization.
Explanation:
Which statement best explains why the skin cell and intestinal epithelial cell are different?
Choose 1 answer:
Skin cells and epithelial cells each make a different set of proteins, which determines each cell
type's structure and function.
Skin cells contain genes that cause the cell to have fingerlike projections along one side, while
intestinal epithelial cells do not.
Intestinal epithelial cells and skin cells contain the same proteins, but the cells are different due
to their roles in the body.
Answers
The statement 'Skin cells and epithelial cells each make a different set of proteins, which determines each cell type's structure and function.' is correct. It is known as differentiation.
What is differentiation?Differentiation refers to the cellular phenomenon for which different genes are expressed in specific cell types.
Differentiation leads to the formation of different cell types that have specific functions/roles.
Differentiation depends on gene expression pattern that influences the type and amount of proteins in a given cell.
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select 3 epithelial tissues and one organ where the tissue is found. explain how or why that tissue allows or helps the organ to perform its function.
Answers
3 epithelial tissues are simple squamous epithelium, Stratified squamous epithelium, and cuboidal epithelium and found in lungs, kidney and liver.
Epithelial tissues are found in the organs and systems of the body and have unique features that help them carry out specific functions. These tissues are classified by their cell shape and the arrangement of their cells. They line body cavities and surfaces, such as the skin, as well as form glands. Three types of epithelial tissues and the organs they are found in are 1. simple squamous epithelium found in the lungs, kidneys, and blood vessels. This tissue allows for diffusion of gases, waste products, and nutrients.
2. Stratified squamous epithelium found in the skin and lining the oral cavity, esophagus, and vagina. This tissue helps to protect underlying tissues from abrasion, microbes, and other harmful agents .3. Cuboidal epithelium found in the kidneys, liver, and glands. This tissue helps with absorption, secretion, and transportation of materials in and out of the organ. The kidneys use cuboidal epithelium to filter blood and produce urine.
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How does the human brain receive messages and send signals to the body about what's happening?
Answers
Answer:
heres how
Explanation:
Neurons communicate with each other by sending chemical and electrical signals. Each neuron is connected with other neurons across tiny junctions called “synapses.” Impulses rush along tiny fibers, like electrical wires, from one neuron to the next. Electrical impulses travel through neurons.
What is an example of adaptive social behavior
Answers
Birds help take care of each other's young to increase their chances of survival, and the behavior is passed on to offspring