Which statement describes a negative consequence of humans’ use of excess water?
Which process plays an important role in the cycling of both carbon and nitrogen?
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Humans affect Earth in many ways. The use of fossil fuels, the clear-cutting of forests, and controlled burns can affect the carbon cycle.Which process can help counteract these human interactions?
What is one negative effect of human influence on cycles of matter?
A student wants to learn how plants and animals interact with one another in an ocean habitat. Which of Earth's spheres should the student study the most?
Why are bacteria needed in the nitrogen cycle?
A scientist is investigating how the amount of available water affects plant growth in a rainforest. Although all of Earth's spheres are interconnected, which of Earth’s spheres does the scientist’s investigation focus on?
Which statements describe the importance of the nitrogen cycle to living things? Select two options.
What protects Earth's surface?
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