EQ1 6.1 Flashcards
1
Q
What is the carbon cycle?
A
A biogeochemical cycle with stores and fluxes of carbon
2
Q
What are the main stores of carbon?
A
- atmosphere
- hydrosphere (oceans)
- terrestrial biosphere
- lithosphere (fossil fuels and sedimentary rocks)
3
Q
What are the main fluxes of carbon between stores?
A
- Biosphere: photosynthesis, respiration
- Tectonics: volcanic eruptions
- Human: land-use change, burning of fossil fuels and coal
- Atmosphere: rock weathering
4
Q
What is the largest store of carbon in the world?
A
Sedimentary rock store
Ocean is the second
5
Q
What is the biggest carbon flux?
A
Photosynthesis
