When did soft-bodied, multi-celled animals first appear?

a) soon after precambrian time ended

b) late in precambrian time

c) very early in precambrian time

d) in the middle of precambrian time

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

Red flowered snapdragons are crossed with white flowered snapdragons, producing all pink snapdragons in the f1 generation. what would you expect if you crossed pink with pink? 3/4, 1/4, 1/2 red, 3/4,/1/2,/1/4 pink,1/2, 3/4, 1/4 white

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?