Question | Answer |
Photosynthesis | energy from the sun enters an ecosystem whena plant uses sunlight to make sugar molecules. |
Producers | is an organism that makes its own food. |
Consumers | organisms that get their energy by eating other organism. |
Decompsers | Some consumers get their food by breaking down dead organisms. |
Cellular Respiration | Process of breaking down food to yeild energy. |
Food Chain | A sequence in which energy is transfered from an organism to the next as each organism each organism eats anothers. |
Trophic Level | One of the teps in a food chain or food pyramid. |
Carbon Cycle | The movement of carbon from the nonliving enviroment into livingsthings and back. |
Nitrogen-fixing bacteria | bacteria that convert atmospheric nitrogeninto ammonia. |
Nitrogen Cycle | a process in which nirogen is cycled between the atmosphere, bacteria, and other organisms |
Phosphorus Cycle | is the movement of phosphorus from the environment to organisms and then back to the environment |
Ecological Succession | is a gradual process of change and replacement of some or all of the species in a community. |
Primary Succession | is the type of succession that occurs on a surface where no ecoysystem existed before, such as rocks or sand dunes |
Secondary Succession | the more common type of succession, occurs on a surface where an ecoysystem has previously existed. |
Pioneer Species | the first organisms to colonize any newly available area and begin the process of ecological succession |
Climax Community | is a fial and stable community |