Question

1. how do humans impact the carbon cycle? give one example.
2. why is it important that water is recycled in the environment?

Explanation:

Humans impact the carbon cycle by burning fossil fuels (e.g., coal, oil, gas). This releases large amounts of carbon dioxide ($CO_2$) into the atmosphere. Normally, $CO_2$ is absorbed by plants during photosynthesis and is in a balanced cycle. But burning fossil fuels adds extra $CO_2$, increasing the greenhouse - effect and contributing to climate change.

Answer:

Humans impact the carbon cycle. For example, burning fossil fuels releases excess $CO_2$.