The nitrogen cycle is shown in the diagram below.

according to this diagram, which of the following contributes ammonia to the soil?
a.
urine and dead plants and animals
b.
atmospheric nitrogen
c.
dissolved nitrogen in rain
d.
all of these

The color of the fur is the genotypephenotype.the genetic combination of alleles that determine the fur color is called the genotypephenotype.

Which of the following describes what an activator an enhancer are

You are studying a protein that you call protein x. there is an aspartic acid at a key position in protein x which is important in the folding and stabilization of that protein. if this aspartic acid is changed to a different amino acid, which type of amino acid substitutions is most likely to allow the protein to fold normally?