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25 Cards in this Set
- Front
- Back
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Where does energy in an ecosytem come from |
produces which harness the energy of the sun aka autotrophs |
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Is energy lost between food levels |
YES lost as heat, animals use the energy for life processes and dont have as much energy to give to the next layer |
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Do species higher up in the food web have larger or smaller populations |
smaller less energy available |
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What determines which organisms and how many can live in an ecosystem |
environmental factors determine the carrying capacity of the system |
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What is a niche |
a role or place in an ecosytem |
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How does competition affect who can occupy a niche |
only one can best occupy and will win out |
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What is the major causes of human's negative effect on the env. |
population |
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What is biodviersity |
variety of species and genes on earth as habitats are lost and species reduced it decreases |
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What are the side effects of low diversity in ecosystems |
1. longer to recover from env changes 2. we need those organisms for food and maybe medicine by reduing the amt we might miss out |
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How can human help repair the env |
recycle conserve whats left use cleaner resources etc. |
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What is a producer |
autotroph, harnesses energy from the sun |
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What is a consumer |
anything that is not a produce, consumes another organism for energy |
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What are omnivores |
plant and meat eaters |
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What are herbivores |
plant eaters |
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What are carnivores |
meat eaters |
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What are predators |
organisms higher up on the food chain that hunt other organism (prey) |
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What is a parasite |
an organism that uses another organism for energy while causing harm to it |
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What is a habitat |
a location in an ecosystem where an animal might live |
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What is a niche |
a specific role or location in a habitat that organism will occupy to avoid competition |
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What is a population |
a group of organisms in a habitat that are actively exchanging genes and reproducing high gene flow |
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What is a community |
all the populations that are within the given ecosystem |
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What is an ecosystem |
a type of environment and climate that is specific to a certain area example: tundra, rainforest, etc |
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What is a biosphere |
the sum of all ecosystems and life on Earth |
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What is pollution |
chemicals and other human byproducts that cause harm to the env. |
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What is a renewable resource |
one that can be reused and does not run out |
