16 points! **will give brainiest to whoever answers first! **

1. They depend on the bacteria to keep animals below their status in the food web, so that they can eat, too.

2a. a single tree monkey, I believe.

2b. a group of tree monkeys, a cluster of trees, a pile of rocks, and a fierce wind.

2c. a group of tree monkeys

3. the Sun; the sun provides energy, which is food, to the plants and algae. Then, they are eaten and so on.

4. energy or food