PLEASE HELP!

Compare and contrast at least two different ways human activity affects the ecosystem both positively and negatively

Negative effects: Cutting down trees and littering have a negative effect on animals and plants.

Positive effects:  Protecting endangered species and cleaning lakes and seas

Explanation:

Ecosystem science is the study of interrelationships among living organisms, biochemical processes, and human activities in ecological communities.

Two human activities which affect the ecosystem negatively:

1. Cutting down trees

2. littering harm animals and plants.

Two human activities which affect the ecosystem positively

1. Protecting endangered species

2. cleaning lakes and seas

answer; a muscle cell, another neuron and a of the above