| Term | Definition |
|---|
| nitrogen fixation | What is the process by which bacteria convert nitrogen gas in the air to ammonia? |
| decomposition | Carbon cycles through the biosphere in all of the following processes except (photosynthesis, transpiration respiration, decomposition) |
| energy flow in one direction, nutrients recycle | The movements of energy and nutrients through living systems are different because: |
| amino acids | Living organism require nitrogen to make ___, which are used to build proteins |
| water cycle | The repeated movement of water between Earth's surface and the atmosphere is called___ |
| bacteria | Nitrogen fixation is carried out primarily by _____ |
| biogeochemical cycles | Matter moves through an ecosystem in ________. |
| transpiration | Water can enter the atmosphere by evaporating from the leaves of plants in the process of ___. |
| CHON | What are the four elements that make-up over 95% of the body in most organisms? |
| nutrients | What are all the chemical substances that an organism needs to sustain life called? |
| atmosphere | In the carbon cycle, carbon dioxide gas will be stored in the reservoir ______ |
| oceans | In the carbon cycle, dissolved carbon dioxide will be store in the reservoir _____. |
| underground | In the carbon cycle, coal, petroleum, and calcium carbonate rock will store in the reservoir ____. |
| photosynthesis | In what processes do plants use carbon dioxide? |
| denitrification | What is the process by which some soil bacteria convert nitrates into nitrogen gas? |
| releases nitrogen gas back into air | What role does denitrification play in the nitrogen cycle? |
| rocks | Phosphate is released as __ and sediments wear down. |
| soil | Plants absorb phosphate from the ___ or from water. |
| part of important life-sustaining molecules. | Why is phosphorus essential to living things? |
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