| A | B |
|---|
| biomass | depends upon organic byproducts |
| geothermal energy | relies on naturally heated water to produce power |
| hydroelectric power | depends on the movement of falling water to spin turbines |
| solar energy | converts thermal energy through the use of photovoltaic cells |
| tidal power | relies on the natural movement of water |
| wind energy | kinetic energy generated by atmosheric movement due to pressure differentials |
| nuclear energy | controls chain reactions to heat steam to turn turbines |
| mutualism | type of symbiosis where both organisms benefit |
| parasitism | type of symbiosis where one organism benefits to the detriment of another |
| Non-renewable | resources that can runout faster than we can use them |
| The sun | ultimate source for thermal energy in our solar system |
| Savannas | tropical grasslands |
| desert | receives less than 25 cm of rain per year |
| fossil fuels | produced from plant and animal decay over long periods of time |
| producers | plants |
| carnivores | meat eaters |
| herbivores | plant eaters |
| omnivores | plant and animal eaters |
| predation | interaction where one organism kills and eats another |
| commensalism | interaction where one benefits while the other is neither helped nor harmed |
| abiotic factors | climate, and soil type of a biome |
| biotic factors | plants and animals in a biome |
| sustainability | utilizing resources without depleting them |
| populations | all of the organisms of a single species in a given area |
| community | all of the populations of a given area |
| ecosystems | all of the populations and abiotic factors in a given area |
| niche | the specific role an organism plays in its environment |
| permafrost | the frozen soil of the tundra |
| canopy | trees whose branches meet high overhead |
| limiting factors | conditions that inhibit an environment from increasing |
| food webs | complex arrangement of food chains |
| keystone species | species essential to the well being of an ecosystem |
