View
363
Download
4
Category
Tags:
Preview:
Citation preview
Protecting the environment
By ALEJANDRO and BEA
Ecosystems
• An ecosystem is made up of all the living things and the physical environment in one place.
Relationships in ecosystems
• There are different types of relationships among living things in an ecosystem.
• Food chains. Certain species eat other species. The food chain represents these relationships.
• Competition. This is when species have the same needs and compete for them.
• Cooperation. This is when species interact and obtain a mutual benefit.
Problems affecting ecosystems
• Human activity can damage ecosystems.
• Pollution affects water, air and soil.
• Deforestation causes the loss of vegetation and fertile soil.
THE END
Recommended