Choose all the answers that apply. Earth:

1) has the most circular orbit in the solar system

2)has seasons because of a tilted axis

3)is a perfect sphere

4)has the largest satellite relative to its planet

5)takes longer than 365 days to orbit the sun

answer; ///(b) it is composed of four protein chains and four heme groups;

the answer is "a.) well–developed vascular system."

explanation:

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.