What happens when the nucleus has unorganized dna

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.

The direct energy source that drives atp synthesis during respiratory oxidative phosphorylation is