| A | B |
|---|
| Mitochondria | Site of cellular respiration. Sugar and oxygen combine to make energy (ATP), water, and carbon dioxide. |
| Eutrophication | Process when there is too much nitrogen (usually because of humans) which causes too much growth. Uses up all of the oxygen, creating dead zones, which leads to the death of organisms. |
| Denitrification | Porcess in which bacteria break down nitrogen compounds and release nitrogen gas into the air. |
| Transpiration | Evaporation from plants' leaves. How most water returns to the environment. |
| Aerobic respiration | Requires oxygen to make energy in the mitochondria. Sugar and oxygen, in the presence of enzymes, combine to release energy (ATP), carbon dioxide, and water. |
| Respiration | Process to make energy from sugar in the mitochondria. Aerobic requires oxygen and sugar with the help of enzymes to make energy, water, and carbon dioxide. Anaerobic does not requires oxygen. Cyclic with photosynthesis, which produces the sugar and oxygen needed by this process. |
| Nitrogen fixation | Process by bacteria that makes nitrogen useable by other organisms. Nitrogen can be used after it has been "fixed." |
| ATP | Stores energy. "Energy carrier molecule." Made in mitochondria through respiration. |
| Bacteria | Organism that is necessary for nitrogen fixation and denitrification. Decomposer that breaks down dead things. |
| Chemosynthesis | Process that bacteria use to make sugars from inorganic compounds because there is no light. |
| Decomposition | Break down of dead things. Elements (C, H, O, N, etc.) are put back into the environment. Done by bacteria/fungi and time. |
| Chloroplast | Site of photosynthesis. Absorbs light energy. Water and carbon dioxide go through chemical reactions with light energy to make sugar and oxygen. Only plants and some protists have it. |
| Anaerobic respiration | Making energy without oxygen. Used when organisms lack mitochondria. Also called fermentation. |
| Precipitiation | Droplets of water from clouds. Examples: rain, snow, sleet, hail, etc. |
| Condensation | Gas changes into a liquid. Cloud formation. |
| Water cycle | Movement of water from Earth's surface to the air and back. |
| Decomposer | Organism that breaks down dead things. Example: bacteria. |
| Carbon cycle | Linked to oxygen cycle. How carbon travels throughout the ecosystem. |
| Combustion | Burning of fossil fuels. Adds carbon to the atmosphere (as carbon dioxide). |
| Evaporation | Liquid changes to a gas |
| Photosynthesis | Producers take in water, carbon dioxide, and light to producer sugar and oxygen in the chloroplast. Cyclic with respiration which produces the water and carbon dioxide needed in this process. |
