| A | B |
|---|
| Consumers break down food molecules to obtain ____ | energy |
| When producers and consumers die, their remains are broken down by __________ . | decomposers |
| Plants remove carbon dioxide from the air during ___________. | photosynthesis |
| Air contains carbon in the form of a gas, _________. | carbon dioxide |
| Nitrogen fixation is a process by which bacteria convert nitrogen gas into a_____ form | usable |
| The water cycle refers to the __________ of water through the living and nonliving parts of the environment. | movement |
| The change of ________ from a liquid to a gas is called evaporation | state |
| Which best explains why a thick tropical forest filled with large plants typically has a lot of water vapor in the air | The plants undergo transpiration. |
| Some consumers, like lions, do not eat plants or any other producers. They only eat other animals. How do lions obtain the carbon they need? | by eating animals that have carbon-based molecules stored in their bodies |
| The change of state from a gas to a liquid is called condensation. The process of condensation forms ._____. | clouds |
