| A | B |
| NITROGEN CYCLE | the transfer of nitrogen from the atmosphere to the soil, to living organisms, and back to the atmosphere |
| RESPIRATION | the process by which cells break down simple food molecules to release the energy they contain |
| HYDROLOGICAL CYCLE | the continuous process by which water moves from Earth's surface to the atmosphere and back |
| EVAPORATION | The process by which water changes from liquid form to an atmospheric gas |
| CONDENSATION | the process by which molecules of water vapor in the air become liquid water |
| PRECIPITATION | the falling to earth of any form of water (rain, snow. hail, sleet or mist) |
| TRANSPIRATION | the falling to earth of any form of water (rain, snow. hail, sleet or mist) |
| NODULES | Small lumps on the roots of plants. Bacteria live here and can fix the nitrogen gas from the air. |
| PHOTOSYNTHESIS | The process through which plants take in carbon dioxide and release oxygen to make their food(glucose). |
| OXYGEN | Released by plants during photosynthesis and used by animals in respiration. |
| CARBON DIOXIDE | A waste product of animals during cellular respiration and needed by plants for photosynthesis. |
| RUN-OFF | precipitation that moves across the lands surface and flows into rivers, lakes and streams |
| MICROCLIMATE | When a large tree falls in the forest, it changes the environmental conditions in that small area. These changes are different from the rest of the forest and creates a |
| CLIMAX COMMUNITY | remain relatively stable until the next disturbance, and contain a predictable assemblage of living things |
| PIONEER SPECIES | What is the name given to orgainsms that 1st colonize an area in primary succession? |
| TIME | Ecological succession is a process of change that occurs over _______________ to organisms in an ecological community |
| COMMUNITY | Many populations living together is called a |
| POPULATION | A group of the same species living in the same place at the same time is called a |
| ECOLOGICAL SUCCESSION | the process by which the mix of species and habitat in an area changes over time. |
| LICHEN | What is the pioneer species for primary succession? |
| SECONDARY SUCCESSION | Which type of succession occurs after a forest fire? |
| TSUNAMI | a huge, fast-moving wave caused by an underwater earthquake or volcanic eruption |
| NITROGEN FIXATION | When nitrogen gas is converted to nitrate. |
| DENITRIFICATION | When nitrates are converted back to nitrogen gas by anaerobic bacteria. |
| ECOLOGICAL SUCCESSION | natural, gradual and orderly change in an environment. It is the gradual replacement of one plant community by another through natural processes over time. |
| COMPOST | a common fertilzer made from leaves, grass, and peelings |
| Rhizobium | group of bacteria found in legume nodules |
| NODULE | enlargement on the root of a legume, such as soybeans, where bacteria is found |
| PIONEER SPECIES | typically the first to colonize a new habitat in a barren ecosystem |
| FLORA | the plants occurring within a given region (HINT: GREEN FAIRY IN DISNEY PRINCESS MOVIE) |
| FAUNA | the animal life occurring within a given region (HINT: PINK/RED FAIRY IN DISNEY PRINCESS MOVIE) |