What are the biggest challenges to organisms in the tundra biome?
migrating to warm areas and finding food
surviving cold temperatures and finding trees to live in
surviving the cold temperatures and obtaining and keeping enough water
finding enough food and obtaining and keeping enough water

Answer:

This paragraph is drawing an analogy between a high waterfall and an electric circuit to explain the concept of voltage and current.

It is saying that a high waterfall has a lot of potential energy that can transfer to the water and cause it to flow very fast, which is similar to how a large voltage in an electric circuit can create a large current. The difference in height of the waterfall causes the water to flow, just as the difference in charge across a battery provides the push or force for the current to flow in a circuit.

In an electric circuit, voltage is the measure of the electric potential difference between two points, and it is measured in volts. Current is the flow of electric charge through the circuit, and it is measured in amperes or amps. The difference in charge across the battery refers to the potential difference or voltage between the positive and negative terminals of the battery, which creates an electric field and provides the force or push for the current to flow through the circuit.

Brainlist Please

This paragraph is using an analogy between a high waterfall and a large voltage to explain the concept of voltage and current in a circuit.

The paragraph starts by comparing a high waterfall to a large voltage. Just as a high waterfall transfers a significant amount of energy to the water, a large voltage in a circuit transfers a significant amount of energy to the flow of electric charge.

The energy transfer in the waterfall causes the river to flow very fast, which is likened to a large current in a circuit.

The "difference in height" in the waterfall analogy refers to the variation in elevation between different points in the waterfall. This difference in height creates a force that propels the water downstream, causing the river to flow. Similarly, in a circuit, the "difference in charge" refers to the disparity in electric charge between two points in the circuit.

This difference in charge, also known as voltage, provides the "push" or driving force for the flow of electric current. It is this voltage difference across the battery that causes the electric current to move through the circuit.

In summary, the paragraph illustrates that just as a high waterfall with a significant difference in height creates a fast-flowing river, the difference in charge (voltage) across a battery in a circuit provides the driving force (push) for the flow of electric current.

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Answer:Do not worry im here to help!

EXTINCT ANIMALS THAT ARE CLOSELY RELATED TO US ARE:Some of the extinct members of this family include Gigantopithecus, Orrorin, Ardipithecus, Kenyanthropus, and the australopithecines Australopithecus and Paranthropus.

animals that are not exticnt and are stilll here and are closley related to us are the: orangutans and gorillas are in the great ape family, humans are most closely related to two other species in the family: bonobos and chimpanzees.

Answer: a gigantopithecus, Paranthropus, Adripcines, and an Orrorin.

The similarities they have with us are the face features ,personality traits, and DNA. The differences is that they have way more body hair, communication, and mental abilities.

One effect of Earth's rotation is the creation of the Coriolis effect, which causes moving objects (such as wind, ocean currents, and the trajectories of projectiles) to be deflected to one side as they travel along the planet's surface. This results in the formation of rotating weather systems and ocean currents, as well as the characteristic eastward flow of the jet stream. The Coriolis effect is stronger at the poles and weaker at the equator, and it affects the direction of movement of many large-scale natural systems on Earth.

Answer:

click on the photo. this should help. please mark brainliest:)

One of the stores for carbon that allows constant  movement to and from it is Reservoirs.

What is carbon?

carbon is a chemical element, like hydrogen, oxygen, lead or any of the others in the periodic table. carbon is a very abundant element. It exists in pure orbthr nearly pure forms – such as the  diamonds and the  graphite – but can also combine with the  other elements to form the molecules.

carbon is in a constant state of movement from place to place. It is stored in what are known as reservoirs, and it moves between these reservoirs through a variety of processes, including photosynthesis, burning fossil fuels, and simply releasing breath from the lungs.

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Answer: C

Explanation:

Science teachers consider practical sciences to be a valuable component of science education for several reasons:

Hands-on Learning: Practical sciences provide students with the opportunity to engage in hands-on learning experiences. This approach allows students to actively explore and manipulate materials, conduct experiments, and make observations.

Example: In a biology class, students may conduct a dissection of a preserved specimen to study the anatomy and structure of organisms. By physically dissecting and examining the different organs and systems, students gain a tangible understanding of the subject matter.

Application of Theory: Practical sciences enable students to apply theoretical knowledge acquired in the classroom to real-world situations. By engaging in practical activities, students can bridge the gap between abstract concepts and their practical applications, fostering a more comprehensive understanding of scientific principles.

Example: In a chemistry class, students might perform experiments to understand chemical reactions and concepts like stoichiometry. By actually mixing and observing different substances, measuring quantities, and analyzing the results, students can see how theoretical concepts translate into practical applications.

Development of Scientific Skills: Practical sciences help students develop essential scientific skills, such as critical thinking, problem-solving, observation, data analysis, and communication. Through practical activities, students learn to formulate hypotheses, design experiments, collect and analyze data, draw conclusions, and communicate their findings effectively.

Example: In a physics class, students could design and conduct an experiment to investigate the relationship between force and motion. By planning the experiment, taking measurements, analyzing the data, and presenting their findings, students enhance their scientific skills and develop a deeper understanding of physics concepts.

Engagement and Motivation: Practical sciences often increase student engagement and motivation in science education. Hands-on activities provide a more interactive and dynamic learning environment, making science more interesting and accessible to students. It can spark curiosity, promote active participation, and cultivate a sense of wonder and excitement about the natural world.

Example: In an environmental science class, students may visit a local ecosystem to conduct field observations, collect samples, and analyze the data they gather. By immersing themselves in the real environment and actively participating in the scientific process, students are more likely to be motivated and engaged in their learning.

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After Interaction How was mass conserved it is discussed below:

Steel Wool + Oxygen (Fire): chemical change

Egg + Heat: chemical change

Water + Heat: physical change.

Zinc + Hydrogen Chloride: chemical change

Sodium Hydroxide + Copper Sulfate: physical change

According to the rule of conservation of mass, no atoms are lost or created during a chemical process. Instead, the atoms combine in various ways to generate products. This is why the number of atoms in each element in a balanced symbol equation is the same on both sides of the equation.

The steel wool is a grayish color and has a rough surface. Oxygen is transparent  It looks like a powder, and like if it was rusted steel wool but then broken apart and turned into a powder  Well Iron oxide is 7 grams and steel wool combined is 7 grams so that the mass was conserved  Yes, this is a chemical change because the steel wool rusted and rust is a chemical change, so iron oxide is cause because if a physical change.

The egg has a yellow yolk in the middle while there is some type of liquid at the border of the yolk, but it is clear, the heat is hot but transparent  The egg turned into a delicious food called an omelet what was yolk staid as a liquid but got a tad harder, but the transparent border around it turned white  It was conserved because the eggshell was 4 grams and the fried egg is 41 grams  It is a chemical change because it results in the formation of new particles, and the chemical bonds break up and new ones are formed.

The water is a clear liquid, while the heat is very hot but transparent  The water turned into a type of oxygen -Water Vapor-   If 5 g of water becomes a gas it becomes 5 g of water vapor. The mass of the liquid water is simply transferred into the mass of the newly formed water vapor.  There was no chemical reaction because the water vapor can be turned back to water also it just changed from a liquid to a gas and did not change its composition. So, it is a physical change.

 Zinc: a white/silver metallic solid. Hydrogen chloride (dilute hydroelectric acid) a transparent, colorless liquid with a very low pH (acidic). Zinc "dissolved" in hydrogen chloride, while emitting a colorless gas.  The liquid remains a colorless liquid, possibly still having a low pH from the unused acid. The colorless gas collected in a test tube gives a popping sound when ignited with a burning wooden splint, so it is not air embedded in the zinc, nor dissolved in hydroelectric acid.  Well although the zinc chloride is 12 grams and not 15 the gas that was released was 3 grams and as we all know 3 + 12 is 15 so that the mass was conserved The production of a new substance (most probably hydrogen) from the reaction of the two reactants. When a few drops of the liquid product are evaporated on a watch glass, a white residue is left.  When a few drops of the liquid hydroelectric acid are evaporated on a watch glass, there is no residue. This proves that a new product (hydrogen gas), (white powder, zinc chloride) is produced instead of zinc being physically dissolved in hydroelectric acid. So, it is a chemical change.

 Sodium hydroxide is a turbid solution and copper sulfate is in form of bright blue crystals. When their solutions are mixed with each other, a pale blue precipitate of basic copper hydroxide & a solution of neutral salt sodium sulfate will be formed. The sodium hydroxide and the copper sulfate combined make a total of 67 grams and the product  is split because the sodium sulfate is 47 grams and the copper hydroxide is 20 grams but all together it is still 67 grams so you could say that the mass was conserved. The proof of the reaction is the appearance of pale blue precipitates of basic copper hydroxide & a solution of neutral salt sodium sulfate. So, it is physical change.

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A step in designing an experimental investigation is identifying the variables that will be controlled for all experimental groups.

The correct option to the given question is option A.

An experiment is a controlled investigation where scientists manipulate and measure specific variables. Scientists design experiments to test hypotheses and answer questions. In the design of an experiment, several steps must be followed to ensure the results are accurate and reliable.

Identifying the variables that will be controlled for all experimental groups: This is an essential step in designing an experimental investigation. Controlled variables are variables that scientists keep constant throughout the experiment so that they do not influence the dependent variable.Writing a procedure that prevents other scientists from repeating the results: Scientists usually provide a detailed description of their experimental procedures to ensure that other scientists can reproduce the results of the experiment and verify its accuracy.

Making sure that the hypothesis will be supported and not refuted: A hypothesis is a statement that scientists make that explains the relationship between the variables in an experiment. The hypothesis must be tested to determine whether it is supported or refuted.Collecting each piece of data in a different way so that there is more variety: In an experiment, data is collected to support or refute the hypothesis. Scientists should collect data in different ways to ensure that the results are reliable and accurate.

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E) N2 contains a strong triple bond that makes it unable to react within organisms.

In the atmosphere, nitrogen exists as a gas (N2), but in the soils it exists as nitrogen oxide, NO, and nitrogen dioxide, NO2, and when used as a fertilizer, can be found in other forms, such as ammonia, NH3, which can be processed even further into a different fertilizer, ammonium nitrate, or NH4NO3.Nitrogen gas from the atmosphere is fixed into organic nitrogen by nitrogen-fixing bacteria. This organic nitrogen enters terrestrial food webs. It leaves the food webs as nitrogenous wastes in the soil.Atmospheric nitrogen fixation is the process where the molecular N2 from the air is converted into useful nitrogenic compounds such as NH3 (ammonia) for other biological processes. The process is performed by various nitrogen-fixing bacteria such as Azotobacter, Bacillus, Clostridium, and Klebsiell.One form of nitrogen gas, nitrous oxide, is also a potent greenhouse gas and can contribute to global warming. High levels of nitrous oxide in the atmosphere also degrade the atmospheric ozone layer, and nitric oxide can create dangerous ground-level ozone.

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All of the options are chemical approaches to control micro-organism excepts: B Disinfectants

19. The scientific name for modern man is: B. Homo sapiens

20. kingdoms are prokaryotic organisms placed D. Monera

21. Plants which have true roots, leaves, stem & seeds inside the fruit are: B. Angiosperm

22.  taxonomic groups contains closely related organisms A. Genus

23. Malaria causing single-celled parasitic protozoan is called: D. Plasmodium

24. kingdoms consists of eukaryotic organisms such as yeast, molds, and mushrooms A. Kingdom fungi

25. Ecology is a biological science that deals with except: D. none

26. The organism that are consumer is D. Scavengers

Disinfectants are special chemicals that are used to kill germs or prevent them from growing on surfaces or objects. They are not usually used to control microorganisms within living things, unlike antibiotics, antiseptics, and autoclaving, which are all chemicals used to control microorganisms.

Homo sapiens is the fancy name used by scientists to refer to regular, everyday humans This is the species that humans are a part of.

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18. All of the following are chemical approaches to control micro-organism excepts: A. Antibiotics B. Disinfectants

19. The scientific name for modern man is C. Antiseptics D. Autoclaving A. Homo erectus B. Homo sapiens

20. In which of the following kingdoms are prokaryotic organisms placed? A. Fungi B. Protest C. Australopithecus D. None C. Planate D. Monera

21. Plants which have true roots, leaves, stem & seeds inside the fruit are A. Gymnosperm C. Mosses D. Ferns B. Angiosperm

22. Which of the following taxonomic groups contains closely related organisms? A. Genus C. Phylum B. Order D. Class

23. Malaria causing single celled parasitic protozoan is called A. Paramecium B. Salmonella C. Mosquito D. Plasmodium

24. Which one of the following kingdoms is consists of eukaryotic organisms such as yeast moulds and mushrooms? A. Ecosystem B. Population

25. Ecology is a biological science that deals with all of the following except Answer the following questions. C. Kingdom monera D. Kingdom plantae A. Kingdom fungi B. Kingdom protista C. organism D. none​

26. Which of the following organism are consumers? A. Photosynthetic B. Chemosynthetic bacteria C. Green plant D. Scavengers

Answer:

Solving this equation gives a result of approximately -79%

Explanation:

It appears that you are trying to calculate the percentage change in pH between two values, pH 1.46 and pH 7.00. To do this, you can use the formula:

Percentage change in pH = 100% x (pH 1.46 - pH 7.00) / (pH 7.00)

Plugging in the values, the formula becomes:

Percentage change in pH = 100% x (-5.54) / 7.00

Solving this equation gives a result of approximately -79%. This means that there was a 79% decrease in pH from pH 1.46 to pH 7.00.

It is important to note that this formula is used to calculate the percentage change in pH between two values. If you are trying to prevent a change in pH, the formula would not be applicable.

Rusting of iron and cutting an onion are both examples of chemical changes.

Rusting of iron is a chemical change because it involves a reaction between iron, oxygen from the air, and water. The iron reacts with oxygen to form iron oxide, commonly known as rust. This process is irreversible, and the chemical composition of the iron is altered during rusting.

Cutting an onion is also a chemical change because it involves the disruption of the onion's cell structure and the release of enzymes. When you cut an onion, enzymes stored within the cells are released, reacting with certain compounds to produce sulfur compounds. These compounds are responsible for the pungent smell and the tears that occur when cutting an onion. The cutting process causes a chemical transformation in the onion's composition, making it a chemical change.

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Answer:

Higher

Explanation:

Molecules such as oxygen move from a higher concentration to a lower concentration across a semi-permeable membrane. This process is called simple diffusion.

Therefore, for oxygen to leave the alveoli and enter the blood, there would need to be a higher concentration of oxygen inside the alveoli and a lower concentration of oxygen in the blood.

In order for oxygen to leave the alveoli and enter the blood, there would be a higher concentration of oxygen in the alveoli compared to the blood.

Diffusion is the process by which compounds or substances move from a

region of higher concentration to that of a lower concentration. This helps to create an equilibrium in the concentration of the substance to prevent cell death due to shrinking etc,

The alveoli is found in the lungs which is the organ of respiration and the

oxygen present is usually in higher concentration and moves to regions of

low concentration in the blood.

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g- t- a- g- c - t or if ur trying to find the mRNA things it’s g- u- a- g- c- u

it depends really but i think this is the answer

Explanation:

Different links show relationships between two species. In the scientific world, there are three types of links, including mutualism, parasitism, and commensalism.

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Answer:

OC is my final answer

Explanation:

set as brainliest

The best statement to describe the accuracy and precision of the measurements is: B. Precise but not accurate. Option B is correct The accuracy and precision of the thermometer measurements can be determined by comparing the measured values with the actual body temperature of the patient.

Accuracy refers to how close the measured values are to the actual value. Precision, on the other hand, refers to how close the measured values are to each other.

In this case, the thermometer readings were 33.03°C, 33.08°C, and 33.05°C, while the actual body temperature was 37.2°C. Since the measured values are significantly lower than the actual value, we can conclude that the measurements are not accurate.

To determine precision, we need to assess how close the measured values are to each other. The readings vary slightly, with a difference of 0.05°C between the highest and lowest readings. This indicates that the measurements are relatively consistent and precise.

Therefore, the best statement to describe the accuracy and precision of the measurements is: B. Precise but not accurate.

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The shooting star occurs in the mesosphere, which is the layer of the atmosphere above the stratosphere and below the thermosphere.

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Their movement will require the input of energy. That is option B.

An active transport is defined as the movement of molecules across the cell membrane from different compartments in the living organism.

The active transport makes use of energy because of the need to move molecules from a semi permeable membrane that is against a concentration gradient.

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Answer:

T Cells

Explanation:

Answer:

Dr. Collins built and designed his instrument based on facts—the recognized concussion symptoms. He needed to learn more about how concussions affect the brain and how people react to cognitive activities. He became aware of a weakness in the way concussions are currently handled. Many athletes don't treat the injury properly or put off getting help, which might have long-term negative effects. The latest device from Dr. Collins both looks for potential injuries and keeps track of healing. Thus, it meets a demand for concussion treatment.

Explanation:

Answer: B

Explanation: The rest are produced through mitosis.

A type of cell that is created during the process of meiosis is known as a sperm cell. Thus, the correct option is C.

Meiosis can be defined as the type of the cell division which goes through or in which two daughter cells has been produced from the parental cell that has not genetically identical to their real parental cell. Meiosis has been also known as the reductional division.

The germ cells must be generally produced by the process of the meiosis. It is because these cells has been usually contain half of the amount of the genetic material as it is compared to the parental cell. After producing these gametes, the cells has undergo through the process of the fertilization in order to produce the product known as zygotes which contain the genetic material of both males and females.

Therefore, sperm cells and egg cells are the types of cells that are created during the process of meiosis.

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The sustainability plan for my community involves replacing non-renewable energy sources like cola with renewable energy sources like solar and wind energy.

A sustainability plan outlines strategies for sustaining the program, activities, and partnerships and serves as a road map for accomplishing long-term objectives.

A community sustainability plan serves as a guide for creating a location where people can live, work, and play that is socially just, economically viable, and environmentally sound.

Programs for recycling and composting, renewable energy initiatives, and the use of community green teams to identify and prioritize sustainability requirements are some examples.

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