3. describe two ways that humans influence the cycling of matter in ecosystems.

water, carbon and nitrogen

Explanation:

All of the materials an organism takes in are returned to the ecosystem, while the organism lives or after it dies. The movement of matter through the living and nonliving parts of an ecosystem is a continuous process, a cycle. ... Three of the most important cycles in ecosystems involve water, carbon, and nitrogen.

relationships play a major role in a human's emotional and mental wellbeing. healthy relationships with the people around you are even linked to a smaller production of cortisol, a stress hormone.

the answer to your question is tooth decay.