Carbon Cycle
What four macromolecules is carbon used for?
Carbohydrates, lipids, proteins, and Nucleic acids
Why do living things need nitrogen?
Nitrogen is needed for amino acids, proteins, DNA and RNA
What are the two carbon cycles?
The Quick cycle and the slow cycle
What process converts nitrogen gas into ammonia in the soil?
Fixation
What man-made process releases carbon from fossil fuels?
Combustion
What process is the opposite of nitrogen fixation?
Denitrification
How do plants absorb carbon through the atmosphere?
Photosynthesis
What organisms perform nitrogen fixation?
Bacteria