| A | B |
| What is the role of a decomposer? | to break down dead material into mutrients |
| What is the role of a scavenger? | eat leftover or dead plants and animals |
| What is the role of a producer? | store energy from the sun |
| What is the role of a herbivore? | eats producers |
| What is the role of a carnivore? | eats herbivores or other carnivores |
| What gas do animals need? | Oxygen |
| What gas do plants need? | Carbon dioxide |
| What is a trophic level | place in the food chain |
| What is an ecosystem? | all living and non-living parts of an environment |
| Lichen is usually the first thing to live in a new environment. It is a | pioneer species |
| After a fire, a habitat recovers through | secondary succession |
| A new habitat is created through | primary succession |
| This law explains why there are cycles of carbon, nitrogen etc | Law of Conservation of Matter |