Question

From your observations how do humas affect the the biological cycles

Answer 1

Answer:

Human activities have greatly increased carbon dioxide levels in the atmosphere and nitrogen levels in the biosphere.

Answer 2

Answer:

Human activities have greatly increased carbon dioxide levels in the atmosphere and nitrogen levels in the biosphere. Altered biogeochemical cycles combined with climate change increase the vulnerability of biodiversity, food security, human health, and water quality to a changing climate.