| A | B |
|---|
| biogeochemical cycle | closed-loops that recycle materials |
| evaporation | liquid water becomes water vapor in the atmosphere |
| transpiration | liquid water on the leaves of plants becomes water vapor |
| fossil fuels | oil, gas and coal |
| combustion | the burning of materials; releases CO2 |
| nitrogen | organisms need this element to make amino acids and nucleic acids |
| carbon | organisms need this element to make carbs, lipids, and nucleic acids |
| phosphorus | organisms need this element to make DNA and RNA |
| habitat | the general place where an organism lives |
| niche | what an organisms does and how it interacts with the environment |
| resources | the necessities of life; water, food, light, space |
| competition | organisms use a limited resource in the smae place at the same time as other organisms |
| predation | one animal captures and feeds on another animal |
| predator | the animal doing the capturing |
| prey | the animal being captured |
| herbivory | an animal that eats producers |
| symbiosis | two species live closely together |
| mutualism | both species benefit from the relationship |
| parasitism | one organism benefits while one organism is harmed (host) |
| commensalism | one organism benefits while the other organisms is unaffected |
