Major organs form and cells continue to divide in the stage. a.embryob. fetusc. blastocystd. zygote

i think that the best answer would be c.

tell me if im wrong : )

the element that provides strength to the exoskeletons of clams and oysters is phosphorus.

this is so because calcium carbonate is the main component in the shells. calcium carbonate is strengthened by phosphorus.

explanation:

b) the inside picture would look at a very high temperature in a very low ph