Each animal has a vital part in our ecosystem. The animal could be pray, or food, for another animal. The animal could be a predator, or a hunter, of other animals. Lets say that mice went extinct right now. Think of how many animals relied on the mice. It could be a hawks main food source. The hawks would then die if the could not find other food. What animals relied on those hawks? Maybe the pumas or other, bigger, hawks. If the hawks died, us humans could have a loss of a main food source. Thus, many humans who needed the hawks would die. Without animals, the entire ecosystem would collapse.
it is because it causes animals to eat plants and we lose plants
If their are more plants then it will be no space for the other plants and animals
An ecosystem is a place where plants and animals ( maybe humans ) live and animals and plants live in the desert so … 
The animal effect is ecosytem is not pollutied and the human is
There are changes brought up in animals and plants. It is due to evolution.
Because plants absorb nutrients from the plants and animals.
it is because it causes animals to eat plants and we lose plants
If their are more plants then it will be no space for the other plants and animals
An ecosystem is a place where plants and animals ( maybe humans ) live and animals and plants live in the desert so … 
Show a ecosystem diagrams about animals rain forest rivers plants?
The animal effect is ecosytem is not pollutied and the human is
If all rice plants were to die then it would affect many animals. If rice plants were wiped out then the local ecosystem would be devastated.
So the animals that eat plants can eat plants and won't run out.
There are changes brought up in animals and plants. It is due to evolution.
Stuff like animals and plants
they are biotic because they have a ecosystem
there will be no ecosystem