Answer: number of neutrons
Explanation:
When we first see chiasmata under a microscope, we know that Separation of Homologs has occured.
Darwin believed the shape of the birds beak was related to the food it ate, the genetic make up of an individual
I think its 2, but I'm not sure. I have the same question on my homework, but I don't know. I'm 82% sure its A.
Hope this helps:)
Explanation: One of the highest probabilities is because of the bird in the front (the one in the point of the v) takes the command in leading to others in the flock to there location which explains for that as in there is no new members of there flock doing so.
Another reason could be is air resistances and helps the flock fly.