The albedo of the moon is that of the earth.

a. the same as
b. less than
c. more than
d. overpowered by

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

20 the compound al(nh3)2 has atoms of nitrogen.

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different