Human activity effects the human cycle because humans breath in oxygen and breath out carbon. After that, the plants than take in the carbon and produce our oxygen
Answer:
The clearcutting of forest for lumber and fuel also increase levels od carbon dioxide in the atmosphere because the trees can no longer remove carbon dioxide from the atmosphere for photosynthesis. If trees are burned in order to be cleared , the burning process release even more carbon dioxide into the air.
Explanation:
