On the time line above, cells with a nucleus first appeared on Earth between

a. B and C

b. C and D

c. D and E

d. E and F

Complex plants and animals appeared on Earth between

a. B and C

b. C and D

c. D and E

d. E and F

On the time line above cells with a nucleus first appeared on Earth betweena B and Cb C and Dc D and Ed E and FComplex plants and animals appeared on Earth betw class=