Answer:
There are many numerous activities of human which can disrupt the equilibrium of the ecosystem.
Some of them are:
- Deforestation
- Habitat destruction such as in the building of dams.
- Use of excessive chemicals such as fertilizers, pesticides in agriculture. It may pollute soil as well as water.
- Excessive pollution and use of fossil fuels.
- Global warming
- Uncontrolled hunting of wild animals
- Introduction of invasive or non-native species. For example, water hyacinth in India.