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Ch 5 Env Sci Voc
Ch 5- How Ecosystems work- pg. 142 Brittney compton
Question | Answer |
---|---|
Photosynthesis | Energy from the sun to the ecosystem transfered to the plant for food. |
producer | An organisim that makes its own food. |
Consumers | Organisims that get their energy by eating other organisims. |
Decomposers | organisims that break down dead rotting organisims. |
cellular respiratoin | The process of breaking down food to yeld energy which occurs in inside the cells of most organisims. |
Food chain | Is a sequence in which energy is transferd from one organisim to the next. |
Food web | Shows many feeding relationships that are posible in an ecosystem. |
Trophic level | Each step through which energy is transfered in a food chain. |
Carbon cycle | Is a process by which carbon is cycled between the atmosphere, land, water, and organisims. |
Nitrogin-fixing Bacteria | the only bacteria that can fix atmoshpheric nitrognen compond. |
Nitrogin Cycle | a process in which nitrogen is cycled between the atmosphere,bacteria, and other organisims. |
Phosphorus Cycle | is the movement of phrosphorus from the enviroment to the organisims and then back to enviroment. |
Ecological succession | is a gradual process of change and repacement of some or all of the species in a community. |
primary succession | is the type of succession that occurs on a surface where no ecosystem existed before. |
Seccondary succession | the more common type of succession,occurs on a surface where a ecosystem has previously exsisted. |
Pioneer species | the first organisims to colonize any newly avaliable area and begin the process of ecological succession. |
Climax communitity | is a final and stable community |