Put these in order from smallest or largest 5 carbon sugar
ACGT
Christine
DNA strand
Double helix
Gene
Nitrogen base
Nucleotide
Phosphate

1. a tropical dry forest carries out more rapid nutrient cycling

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.

most community's take hundreds of years to become stable

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.