| A | B |
|---|
| Biotic. | the term Biotic means 'living'. |
| Abiotic. | nonliving,physical features of the environment, including air, water, sunlight, soil, temperature, and climate. |
| Atmosphere. | air surrounding Earth; is made up of gases, including 78 percent nitrogen, 21 percent oxygen, and 0.03 percent carbon dioxide. |
| Soil. | mixture of mineral and rock particles, the remains of dead organisms,air and water that forms the top layer of Earth's crust and supports plant growth. |
| Climate. | average weather conditions of an area over time, including wind, temperature, and rainfall or other types of precipitation such as snow or sleet. |
| Evaporation. | process that takes place when a liquid changes to a gas. |
| Condensation. | process that takes place when a gas changes to a liquid. |
| Water cycle. | model describing how water moves from Earth's surface to the atmosphere and back to the surface again through evaporation, condensation,and precipitation. |
| Nitrogen fixation. | process in which some types of bacteria in the soil change nitrogen gas into a form of nitrogen that plants can use. |
| Nitrogen cycle. | model describing how nitrogen moves form the atmosphere to the soil, to living organisms, and then back to the atmosphere. |
| Carbon cycle. | model describing how carbon molecules move between the living and nonliving world. |
| Chemosynthesis. | process in which producers make energy-rich nutrient molecules from chemicals. |
| Food web. | model that shows the complex feeding relationships among organisms in a community. |
| Energy pyramid. | model that shows the amount of energy available at each feeding level in an ecosystem. |
| Name one abiotic factor. | soil bacteria. |
| Name the process shown in this equation. CO2 + H2O light energy sugar + O2 | photosynthesis. |
| Would a latitude line farther away from the equator have higher or lower temperatures? | Lower. |
| Water vapor forming droplets that form clouds directly involves which process? | this involves condensation |
| Which group makes up the largest level of an energy pyramid? | producers. |
| Earth receives a constant supply of ... | light energy. |
| Name an energy source for chemosynthesis. | sulfur molecules. |
| What is the difference between a food chain and a food web? | a web is more complete and shows many food chains. |
| Should a country that has many starving people grow corn and vegetables for people to eat or to feed cattle for people to eat? | Corn and vegetables because most of the energy of the corn will be lost if fed to the cattle. |
| Do bacteria need nitrogen? | Yes; nitrogen is an important component of DNA and proteins. |
| Explain why giant sequoia trees grow on the west side of California's Inyo Mountains and Death Valley, a desert, is on the east side of the mountains. | As the air blows over the mountains from the ocean on the west side, it cools and loses moisture. Thus there is a forest on one side, but a desert on the other. |
| Environment. | everything such as climate,soil,and living things that surrounds and affects an organism. |
| Biosphere. | the part of the world in which life can exist. |
| Energy. | the capacity for doing work. |
