Bio Notes for Test 2
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Created by:
swimmychick on October 6, 2011
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45 terms
Terms | Definitions |
|---|---|
 ecology | interaction between organisms and with their environment |
| biosphere | living part of the world (couple miles deep and a couple miles in the air) |
| populations of species->community->ecosystem->biosphere | populations of species--> |
| autotrophs | are producers |
| heterotrophs | are consumers (carnivores & herbivores & omnivores) or reducers (saprobes & decomposers) |
| trophic | feeding levels |
| biomass | _______ pyramids can be inverted (in aquatic biomes) but energy pyramids are NEVER inverted |
| 97% | _____% of water is in oceans |
| 3% | ____% of water is fresh |
| 2% | ____% in glaciers |
| about 1% | _______ ___% underground water |
| about .01% | _______ ____% is found in lakes and rivers |
| about .001% | ______ ____% is found in the atmosphere |
| Nitrogen | ___________ is 80% of our atmosphere |
| bacteria | need a variety of ___________ to fix N2 into NH3 (ammonia) |
| nitrification | NH3 is unstable and somewhat toxic... so other microbes turn NH3 into more stable NOxS through ____________ |
| denitrifying decomposers | there are ________ _________ that reverse the nitrogen fixation process |
| protein | nitrogen is used to make _______ |
| smart | nitrogen is _________: it has the ability to make decisions and react differently and specifically to a variety of different situations |
| phosphorus cycle | the ____________ ________ is strictly a mineral cycle, not a gas |
| phosphorus cycle | used for energy transfer and used to make nuclei acids |
| water vapor, carbon dioxide, methane, ozone | four major greenhouse gasses |
| niche | job description |
| mutualism | +/+ |
| commensalism | +/o |
| parasitism | +/- |
| succession | when a sequence of organisms is observed |
| primary | starting from scratch |
| secondary succession | a partial reset, when not all life is eliminated |
| poisons and nutrient pollution | two classes of aquatic pollutants |
| oxygen | bacteria requires _________ to process these nutrients |
| desert (cold tundra or warm desert) | 1ft +/- |
| grasslands (praries and savannahs) | 2ft +/- |
| leaf forests | 3ft +/- |
| permafrost | acts as a water "seal" |
| 70 degrees | our atmosphere, on average, warms the planet about _____ |
| exponential growth | s shaped curve |
| logistic growth | slowing growth |
| 7 billion | world population |
| about 110 | ___________ ______ people per mi2 |
| rice, wheat, corn | half of all calories consumed by mankind come from... |
| 308 million | US population |
| 4% | _____ of the world's population is in the US |
| 11.5 million | Ohio's population |
| 4% | _____ of the us's population is in Ohio |
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