Carbon Cycle
The process plants use to make sugar and oxygen
What is photosynthes?
Contained mostly in rocks and minerals
What is phosphorus?
Bacteria that “fixes” nitrogen
What is nitrogen-fixing bacteria?
Began about 3.8 billion years ago
What is the water cycle
The main regulator of CO2
What is the ocean?
Another source of phosphorus
What is man-made pollution?
Biogeochemical process which transforms the nitrogen in the atmosphere to a more usable form for living organisms
What is the nitrogen cycle?
0.35% of water is stored here
What is water vapour in the atmosphere
Coal, oli, and natural gas are classified as this
What is fossil fuel?
Phosphorus is taken up by this?
What is a primary producer?
78% of the atmosphere?
What is nitrogen?
Shows the continuous movement of water?
What is the water cycle?
Too much CO2 may be responsible for this
What is sugar greenhouse effect?
Phosphorus makes up this important chemical
What is DNA?
Cannot directly use all the nitrogen in the atmosphere
What are plants and animals?
Taken up by plant roots?
What is groundwater?
Another natural source for CO2
What is a volcano?
Too much phosphorus leads to this
What is plant overgrowth?
Creates ammonia and nitrate
What is animal waste decay by the action of bacteria?
Makes up 97% of water
What is the ocean?