What are the major reservoirs in the carbon cycle? \
a. atmosphere, biosphere, liquid and frozen waters, petroleum
b. atmosphere, biosphere, rocks
c. atmosphere, biosphere, liquid and frozen waters, rocks, earth's crust
d. atmosphere, liquid and frozen waters, rocks, earth crust

How are agricultural practices used today

Excess nitrogen can lead to a algal blooms and the death of fish. which characteristic of nitrogen causes this problem?

As a bee feeds upon the nectar produced by a flower, the bee may become coated with the flower's pollen. as the bee flies from flower to flower, some of this pollen may contact a flower's pistil, resulting in pollination. this relationship between the bee and the flower is an example of a. parasitism b. commensalism c. mutualism d. competition