Crop rotation is important because
Some plants use a lot of nitrogen.
It increases soil fertility.
Repeated planting of the same crops decreases soil quality
All of the above.

The term autotroph refers to an organism that: a. uses co2 for its carbon source. b. must obtain organic compounds for its carbon needs. c. gets energy from sunlight. d. gets energy by oxidizing chemical compounds. e. does not need a carbon source