Biogeochemical Cycles Test Info
Order by
20 terms
Terms | Definitions |
|---|---|
 accumulation/surface run-off | step 1 of water cycle |
| evaporation/transpiration | step 2 of water cycle |
| condensation | step 3 of water cycle |
| precipitation | step 4 of water cycle |
| run-off | step 5 of water cycle |
| water,carbon,sulfur and nitrogen | Elements which have a gas phase |
| rocks and burning of fossil fuels | two sources of carbon |
| CO2 | organic molecule that contains carbon |
| photosynthesis | process that removes carbon from the atmosphere |
| cellular respiration | process that adds carbon to the atmosphere |
| Is essential to the life and building blocks of proteins and DNA | Why is N2 necessary for living things? |
| The process of fixing nitrogen for organisms (fixation) and then putting it back into the atmosphere in its molecular form.(dentrification) | What is the N2 cycle? |
| Raw molecule is not fit for organic use. Must be turned into an organic compund before use. | Problem with C2, N2, P2 and S2 |
| PO4 (Phosphorus&Oxygen) | What phosphate ion is needed by living things? |
| Because organisms need large quantities of it. | How is P2 a limiting factor? |
| Underground rocks and minerals | What are the sources of sulfur? |
| Sulfate ion (SO4) | What organic molecule has sulfur in it? |
| Good: Can help reduce global warming; blocking sun Bad and Ugly: Sulfuric Acid can get into acid rain. | What is the good, the bad and the ugly of SOx? |
| depleted oxygen from water | What is eutrophication? |
| overabundance of phosphorus in water | What are the causes of eutrophication? |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.