List and describe three ways that human can change ecosystems and three ways that humans can help protect ecosystems?

Humans can change ecosystems through deforestation, which removes trees and disrupts habitats; pollution, which contaminates air, water, and soil, harming wildlife; and urbanization, which alters land use and fragments habitats. To protect ecosystems, humans can implement conservation efforts, such as establishing protected areas to safeguard biodiversity; promote sustainable practices, like responsible farming and fishing, to minimize environmental impact; and restore degraded habitats through reforestation and habitat rehabilitation initiatives.