Question

in this section, you learned that all body matter is eventually replaced. how does this influence your understanding of how your own body is involved in biogeochemical cycles? name two human actions needed to slow climate change. describe some ways that climate change might influence the water cycle. plants need nitrogen to produce proteins and other important chemicals. describe how nitrogen in the atmosphere makes its way into plants. how is the nitrogen in dead organisms released back into the soil?

Explanation:

1. Our body matter being replaced shows we are part of biogeochemical cycles. We take in and release elements like carbon, nitrogen etc. as our matter is recycled.
2. Two human actions to slow climate change: reducing fossil - fuel consumption (e.g., using renewable energy) and reforestation (trees absorb carbon - dioxide).
3. Climate change can increase evaporation rates, alter precipitation patterns (more intense or less frequent rainfall), and change the timing of snowmelt, all of which affect the water cycle.
4. Nitrogen in the atmosphere is converted to a usable form (ammonia or nitrate) by nitrogen - fixing bacteria in soil or in root nodules of legumes. This converted nitrogen is then taken up by plants through their roots.
5. Decomposer organisms like bacteria and fungi break down dead organisms. During decomposition, they release nitrogen - containing compounds (such as ammonia) back into the soil, making it available for plants again.

Answer:

1. Our body's matter - replacement shows we are part of biogeochemical cycles, exchanging elements.
2. Reducing fossil - fuel use, reforestation.
3. Increased evaporation, altered precipitation, changed snowmelt timing.
4. Nitrogen - fixing bacteria convert atmospheric nitrogen, plants take it up through roots.
5. Decomposer organisms break down dead organisms and release nitrogen into soil.