Final answer:
Humans negatively affect ecosystems through deforestation and pollution. To repair the damage, humans can plant trees, implement reforestation programs, adopt eco-friendly practices, and organize clean-up campaigns.
Step-by-step explanation:
Two ways in which humans negatively affect ecosystems are through deforestation and pollution.
To repair the damage caused by deforestation, humans can plant trees and implement reforestation programs. Additionally, humans can reduce pollution by adopting eco-friendly practices, such as using renewable energy sources and reducing waste.
One action that you and your classmates could take to help ecosystems is to organize local clean-up campaigns. This action could help ecosystems by reducing pollution and preserving the health of the environment.
Learn more about Humans' impact on ecosystems