Humans aren't the only animals that get cancer; other organisms get tumors, as well, and their risk may be influenced by environmental factors. An ecologist decides to study whether pollution in lakes causes cancer, so he collects 100 fish from each of two lakes, one known to be polluted and the other known to be pristine. He then dissects them and determines if they have tumors in their tissues or not. His data is shown below. ​ ​
Polluted Pristine
tumors present
26
15
No tumors 74 85
To determine whether there appears to be a statistically significant relationship between exposure to pollution and risk of developing tumors, he decides to conduct a χ2 analysis. Based on the results of this analysis, which of the following is the most appropriate conclusion?
Fish appear to be at a significantly higher risk of tumors in the polluted lake compared to the pristine lake (P < 0.05).
Fish appear to be at a significantly higher risk of tumors in the polluted lake compared to the pristine lake (P > 0.05).
Fish appear to be at a significantly lower risk of tumors in the polluted lake compared to the pristine lake (P < 0.05).
These data do not provide sufficient evidence that the risk of tumors differs in polluted or pristine lakes (P < 0.05).

Answer:

Seaweed is apart of the kingdom B, Protista

Explanation:

This is because seaweed is an algae, which is a multicellular photosynthetic protist.

Kingdom Protista is a unique group that  dont belong in the plant, animal or fungi kingdoms. Many are unicellular organisms as well, but some different algae forms can be multicellular

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Answer:

Explanation:

uhh           i think                                                                   c for 1                                 and                      c for 2                      a for      3

Answer:

true

Explanation:

False, there is a difference between primate language and human language.

While both primates and humans possess the ability to communicate through various forms of language, there are distinct differences between primate language and human language. Primates, such as chimpanzees and gorillas, use a form of communication known as "primate language," which primarily consists of vocalizations, gestures, and body language. However, primate language is more limited in its complexity and lacks the grammar, syntax, and abstract thinking present in human language.

Human language, on the other hand, is characterized by its rich vocabulary, grammatical structures, and the ability to convey abstract concepts and ideas. Humans can communicate through spoken and written language, allowing for complex communication that is not observed in primate language. Thus, while both primates and humans possess language capabilities, human language is more advanced and distinct in its complexity.

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The correct answer is "All of the Above". All four indicators (dental development, epiphyseal fusion, pubic symphysis morphology, and all of the above) are age indicators for adults.

Age indicators for adults:

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The net working capital for the firm is $1,500, calculated by subtracting current liabilities from current assets, the correct option is (e).

To calculate the net working capital, you need to subtract the current liabilities from the current assets.

In a company's financial statements, the formula for calculating current assets can be expressed as the sum of inventory, accounts receivable, and cash.

Current Assets = Inventory + Accounts Receivable + Cash

Current Liabilities = Accounts Payable

Using the given values:

Current Assets = $820 (Inventory) + $1,210 (Accounts Receivable) + $360 (Cash)

= $2,390

Current Liabilities = $890 (Accounts Payable)

The formula to calculate Net Working Capital is derived by subtracting Current Liabilities from Current Assets.

Net Working Capital = Current Assets - Current Liabilities

Net Working Capital = $2,390 - $890

= $1,500

Therefore, the amount of net working capital is $1,500.

Hence, the correct option is (e).

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An increase in precipitation and nearby factories directly affect soil pH, favoring the growth of mariflowers over noniflowers.

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Answer:

The process autotrophs (plants) use to create food. they convert CO2 (Carbon Dioxide) and H2O (Water) into O2 (Oxygen) and glucose (sugar).

Answer:

photo synthesis is the green plants which making other organisms to convert engry into chemical

Answer:

Electromagnet

Explanation:

Magnets are categorized by their source of magnetism. Temporary magnets become magnetized in the presence of a magnetic field.

Striated skeletal muscle fiber

Answer:

It should be striated skeletal muscle fibers, I believe. Correct me if I am wrong.

Answer: A

i know this because i have taken this before

Answer:

The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

Explanation:

hope to help

Answer: B. replication

Explanation:

Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell.

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Intercostal nerve transfer to the biceps motor branch is a technique used to treat complete traumatic brachial plexus injuries. It involves transferring a nerve from the chest, typically the eighth or ninth intercostal nerve, to the paralyzed biceps motor branch.

The goal is to restore some level of elbow flexion, and possibly even forearm supination and hand grip strength. The procedure starts by identifying the intercostal nerve and dissecting it out. The nerve is then routed to the biceps motor branch and coapted end-to-end.

After coaptation, reinnervation of the target nerve is assessed using electrodiagnostic measures, and a nerve graft may be needed if there is poor reinnervation.

This procedure can produce successful outcomes, although the degree of function restored is dependent on a variety of factors. Regardless, intercostal nerve transfer can be an important part of treating complete traumatic brachial plexus injuries and can aid in helping a patient regain some arm and hand function.

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Correct question is :

intercostal nerve transfer to the biceps motor branch in complete traumatic brachial plexus injuries. explain.

Answer: the answers are 1. They are vestigial structures that once performed... 2. imprints of leaves or footprints... 3. homo erectus... 4. the early stages of embryo... 5. a close evolutionary connection between humans and many other mammals

Explanation: 100% correct as of april 2022

Human embryo have many characters that disappear during their growth. Tail bone is vestigial in humans, they have hair and produce milk indicates that these are mammal.

Mammals are the animals that have some unique feature like giving birth to young once, have mammary gland, having body hair, etc.

The appearance of tail in mammals just like fish, amphibians shows evolution.

Humans have hair and mammary gland which produce milk to nourish the young means they belongs to mammals.

Thus, all these characteristics shows the evidences of evolution.

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Answer:

Epithelial tissue covers the body and lines the internal organs, serving as a protective barrier. It also secretes substances such as hormones and enzymes, and absorbs nutrients and other substances from the environment. Therefore, all of the options mentioned in the question are correct.

As nicotine causes dopamine-releasing neurons to fire more action potentials, nicotine will therefore cause increased levels of dopamine in the synaptic cleft.

In the field of biology, a synaptic cleft can be described as a small region of space that can be found between two neurons. This space is present in between the dendrite region (the ending region) and the axon region (starting region) of two neurons.

As nicotine causes an increase in dopamine-releasing neurons, hence there will be an increased level of dopamine in the synaptic clefts because the neurons are firing action potentials for dopamine when nicotine is administered.

Although a part of your question is missing, you might be referring to this question:

Nicotine is addictive because it causes dopamine-releasing neurons to fire more action potentials. nicotine will therefore cause:

- neuron damage

- more chemicals in the neurons

-  increased levels of dopamine in the synaptic cleft

-decreased levels of dopamine in the synaptic cleft

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Answer:

The correct answer is -

Thymine: 20%

Guanine: 30%

Cytosine: 30%

Explanation:

According to Chargaff's rule which states that the purine residues are equal to the pyrimidines residue in DNA sample which means A+G = T+C where A is adenine, G is guanine, C is cytosine and T is thymine. It is also known that A is always equal to T and C is equal to G.

So, A+G+T+C = 100

20+20+G+C

100-40 = G+C

60= G+C

as we know G is equal to C similarly A is equal to T

Thus, G = C= 30%

    A= T= 20%

Answer:

A point mutation with occur.

Explanation:

This quesiton might need more info but in general a point mutation will occur.

Answer:

Synthesis releases energy because the molecules bond to form a stable configuration and therefore give up energy. The bonded molecules have a lower energy level than free molecules and are held in the new bond.

Explanation:

Chemical reactions make and break the chemical bonds between molecules, resulting in new materials as the products of the chemical reaction. Chemical reactions can occur spontaneously or require an outside trigger such as an input of energy. Breaking chemical bonds absorbs energy, while making new bonds releases energy, with the overall chemical reaction being endothermic or exothermic.

Because molecules must link together to establish a stable structure, they lose energy during synthesis. The newly formed bond holds the bonded molecules, which are at a lower energy level than free molecules.

Because molecules must link together to establish a stable structure, they lose energy during synthesis. The newly formed bond holds the bonded molecules, which are at a lower energy level than free molecules.

Chemical reactions create and destroy the chemical bonds that hold molecules together, creating new materials as their end product. Chemical reactions can start on their own or need an outside trigger, like an energy input. Chemical reactions can be endothermic or exothermic in that breaking chemical bonds takes energy while creating new ones releases it.

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An ichnofossil is any part of the hard skeleton left behind by a vertebrate in the fossil record. This statement is false. An ichnofossil is a trace fossil, which is any indirect evidence of past life, such as tracks, burrows, and feces. It is not part of the hard skeleton left behind by a vertebrate.

Cladograms are scientific hypotheses that can be overturned by new data. This statement is true. Cladograms are diagrams that show the evolutionary relationship between organisms based on various traits. New data can cause changes to be made to cladograms which can result in a change to the interpretation of the evolutionary history of organisms.

Angiosperm plants did not appear until after the extinction of the dinosaurs. This statement is false. Angiosperms, also known as flowering plants, appeared in the fossil record at least 140 million years ago. Although the dinosaurs went extinct around 66 million years ago, angiosperms were already widespread and diversifying by that time.

The definition of an analogous character is "a character that has a similar function to a character in a different organism, but these similarities are due to different evolutionary origins". This statement is true. Analogous characters are traits that have evolved independently in different groups of organisms due to similar environmental pressures and not due to a shared ancestor.

In evolution, non-genetic changes that occur during an organism's life span, such as increases in muscle mass due to exercise and diet, cannot be passed on to the next generation. This statement is true. Non-genetic changes that occur during an organism's life span are not heritable and cannot be passed on to the next generation. Only genetic changes that occur in the germ cells, such as mutations, can be passed on to the offspring.

The definition of a monophyletic group is "a group of organisms that has a single ancestor and contains only some of the descendants of this unique ancestor". This statement is false. A monophyletic group is a group of organisms that has a single ancestor and contains all of the descendants of this unique ancestor. This group is also called a clade.

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the erosion of the sand and soil from the shoreline

Many genes that affect metabolism in yeast are more similar to bacterial than archaeal genes. This supports the fact that eukaryotes may share a more recent common ancestor with bacteria than with archaea.

Organelles and a membrane-bound nucleus are only found in cells classified as eukaryotic. Eukaryotic creatures are big and complicated because eukaryotic cells include nuclei that are encased in nuclear membranes. Eukaryotic cells are found in protozoa, fungi, plants, and mammals.

They fall within the Eukaryotic kingdom. All living things are eukaryotic. Because they lack cell walls and chloroplasts and have smaller vacuoles, animal cells differ from those of other eukaryotes, most notably plants. Animal cells are capable of changing into a variety of forms because they lack a cell wall.

The cells of prokaryotic organisms, in contrast, lack organelles and are typically smaller than eukaryotic cells.

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The Metamorphoses main topic is metamorphosis, or transformation, as the title may imply. The concept of transformation is seen almost everywhere in the fifteen volumes that make up the Metamorphoses.

Gods are constantly changing both their own shapes and identities as well as human shapes and beings. The poem is typically regarded as meeting the requirements for an epic; metamorphoses is lengthy, relating more than 250 narratives across fifteen books; it is composed in dactylic hexameter, the metre of both the ancient Iliad and Odyssey, as well as the more modern epic Aeneid; and it addresses the lofty literary subject of myth.

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2. Amino acids                 F. building blocks of proteins

3.  mRNA                             C. copies DNA code to take it from the nucleus to the ribosome

4. tRNA                                 B. brings amino acids to the ribosome

5. Codons                             D. triplets of mRNA

6. Anticodons                        A. triplets of tRNA

E 7. Polypeptide                     E. another name for a protein

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The example of human genetic mutation and selection resulting from the Neolithic Revolution is the permanent "switch-on" of the lactase gene, prevalent in some populations, which allows humans to digest milk beyond weaning from breastmilk.

During the Neolithic Revolution, humans transitioned from a nomadic hunter-gatherer lifestyle to settled farming communities. This shift brought about significant changes in human behavior, including the domestication of animals for agriculture. One consequence of this transition was the development of the ability to digest milk in adulthood, known as lactase persistence.

Lactase persistence is the result of a genetic mutation that allows the lactase gene, which produces the enzyme lactase necessary for digesting lactose in milk, to remain active into adulthood. In most mammals, including our ancestors, the lactase gene switches off after weaning, making them lactose intolerant. However, in certain populations that have a long history of dairy farming, such as Europeans, some African and Middle Eastern communities, the lactase gene remains active throughout life.

This genetic mutation and subsequent selection were advantageous in societies that relied on dairy farming, as it provided a valuable source of nutrition and calories. Individuals with the lactase persistence mutation could continue to digest milk and its products, giving them a survival advantage. Over generations, this genetic trait became more prevalent in populations with a history of dairy farming, demonstrating the influence of human genetic mutation and selection resulting from the Neolithic Revolution.

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As the skateboarder moves, several energy transformations take place within their body. Some of the energy transformations include:

1. Chemical energy to kinetic energy: When the skateboarder pushes off the ground, the energy stored in the chemical bonds of their muscles is converted into kinetic energy, which is responsible for their motion.

2. Kinetic energy to gravitational potential energy: As the skateboarder moves up a ramp, their kinetic energy is converted into gravitational potential energy.

3. Gravitational potential energy to kinetic energy: When the skateboarder moves down the ramp, the gravitational potential energy is converted back into kinetic energy.

4. Kinetic energy to thermal energy: As the skateboarder moves, they also experience frictional forces which convert some of their kinetic energy into thermal energy.

5. Chemical energy to thermal energy: The continuous movement of the skateboarder requires the energy stored in their muscles to be converted into thermal energy, which is released as heat.

I hope that the assistance I provided was helpful.

The motion of the skateboarder is powered by energy transformations that occur within their body. As the skateboarder moves, their body converts stored chemical energy (from food) into kinetic energy, which is the energy of motion. This conversion happens through a series of complex biochemical processes that occur within the skateboarder's muscles.

When the skateboarder pushes off the ground, their leg muscles contract, converting chemical energy stored in the form of ATP (adenosine triphosphate) into kinetic energy as the legs move and the skateboarder accelerates. As the skateboarder continues to move, the muscles in their body work together to maintain balance and control, converting chemical energy into kinetic energy and potential energy as the skateboarder jumps, turns, and performs tricks.

Additionally, the skateboarder's body also experiences other forms of energy transformation during this process. For example, as the skateboarder moves, their body generates heat through metabolic processes, which is a form of thermal energy. The skateboarder also loses energy through friction with the ground and air resistance, which is converted into heat and sound energy.

In summary, the motion of the skateboarder is powered by a series of complex energy transformations that occur within their body. These transformations involve the conversion of stored chemical energy into kinetic and potential energy, as well as the generation of heat and sound energy through friction and air resistance.

Answer:

A

Explanation:

Because a cell is the smallest unit of life