click below
click below
Normal Size Small Size show me how
Human Impact
| Question | Answer |
|---|---|
| detriovore | scavengers that eat dead organisms |
| food chain | series of steps in which organisms transfer energy |
| food web | linked food chains |
| trophic level | a level of the food chain |
| how much energy is available to each trophic level | 10% of what was in the previous level |
| nutrients | the things that an organism needs to survive |
| biotic | living |
| abiotic | non-living |
| how many species does the rainforest have | 5 million |
| biodiversity | the total amount of species in an ecosystem |
| threatened species | rapid population decline |
| endangered species | population so low that extinction is possible |
| greenhouse effect | carbon, methane and water vapor mix in the atmosphere to keep the earth warm |
| most important element in living things | carbon |
| what comes from burning coal | Sulfur Dioxide and Nitrogen Oxide |
| what causes acid rain | excess Sulfur Dioxide and Nitrogen Oxide |
| Ozone | O3, is found in the Upper Stratosphere and blocks UV rays from the sun |
| what has cause our Ozone layer to deplete | the overuse of chlorofluorocarbons and auto emmisions |
| biomagnification | each trophic level higher up is more affected by substances or changes in the environment |
| dentrification | when decomposers convert atmospheric nitrogen into ammonia |
| nitrogen is used to make what | amino acids in the body |
| how do legumes use nitrogen | they convert it into ammonia in a process called nitrogen fixation |
| eutrophication | increase in limiting factors (caused by runoff of toxic fertilizers and chemicals) and it gets into the water, causes excessive algae growth, and blocks the oxygen from getting to the water, causing marine life to die |