| A | B |
|---|
| Energy flows from ________ to ____________ to________. | sun, producers, consumers |
| Which nonliving thing has the largest impact on life? | water |
| When water vapor condenses, it returns to Earth in the form of _________. | rain and snow |
| _________is held below the surface of the earth. | ground water |
| When water is heated by the sun, it reenters the atmosphere through __________. | evaporation |
| When water evaporates from tree leaves, it is called ______. | transpiration |
| What is used by plants in the process of photosynthesis? | carbon dioxide |
| Organisms use _________during respiration. | oxygen |
| __________ is the process which uses oxygen to create energy and then gives off carbon dioxide. | respiration |
| __________is the burning of wood or fossil fuels. | Combustion |
| Examples of fossil fuels are _. | coal, oil, natural gas |
| Carbon dioxide that dissolves in the sea makes calcium cabonate in _______. | shells |
