4 Written questions
4 Multiple choice questions
- Free nitrogen can not be used so it has to become fixed. Bacteria perfoms this function.
- Survives by stealing energy off another animal
- Occurs after a disturbance in an already existing ecosystem. First species to appear are weeds/grasses.
- Animal that gets eaten.
3 True/False questions
Scavenger → Eats animals that are already dead.
Food Web → Animal that eats prey
Origin of Life → First life was unicellular, did not need oxygen, were consumers, and lived in oceans. Formed by chemical units.