Have you ever thought about an ecosystem? An ecosystem needs plants, animals, bacteria, mushrooms, sunlight, water, air, and a good temperature. The five types of ecosystems are ocean, desert, wetland, arctic tundra, and a forest. Ecosystems have food chains these food chains keep the ecosystem together because if an animal eats something from the bottom of the food chain than another thing doesn’t get as much food as it need wich means some of that animal die which might cause the whole food chain get off balance. That’s why something at the top of the food chain eats another thing from the top of the food chain and something from the bottom of the food chain needs to eat something else from the bottom of the food chain. We should protect all ecosystems because if we don’t animals might go extinct. The trees we need paper at school and at everyday jobs if we don’t have trees we will also slowly die. We would slowly die because trees breathe in carbon dioxide which is bad for us and breathe out oxygen which we need to survive. Without ecosystems we would not be living today.