carbon cycle Flashcards
1
Q
1
A
Carbon dioxide (CO2) is in the air from natural processes and human activities.
2
Q
2
A
Plants and oceans take in CO2 from the air.
3
Q
3
A
Plants use CO2 for photosynthesis and release oxygen.
4
Q
4
A
Animals breathe out CO2, and when plants and animals die, they release carbon back into the air through decomposition.
5
Q
5
A
Human activities like burning fossil fuels add extra CO2 to the air.
