Which statement best describes why multicellular organisms have specialized systems? A. One system can do everything in the body.
B. All systems work separately from each other.
C. Systems fight against each other in the body.
D. Each system performs different functions that are necessary for life.

this protocol describes a detailed procedure for intracellular flow cytometry staining.

mammal

explanation:

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

human-caused climate hope this