The skeletal and muscular systems are similar because The skeletal and muscular systems are different because-

the calvin cycle has three stages. in stage 1, the enzyme rubisco incorporates carbon dioxide into an organic molecule. in stage 2, the organic molecule is reduced. in stage 3, rubp, the molecule that starts the cycle, is regenerated so that the cycle can continue

"do a testcross with a homozygous recessive plant."

it is either c or d and i know for sure it is not a or b

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .