Gene flow does not promote speciation, whereas season of fertility, natural selection, and genetic drift do.
The only part of the plant that is left behind is the root so the answer is roots
He observed 15 different finch species that originated as one ancestral bird. all differing in body shape, beak size, and mating habbits
During photosynthesis, carbon dioxide and water combine to form glucose (the plant’s energy). When there is not enough water, the plant cannot produce any glucose, even if there is light and carbon dioxide
I think it is a sex cell (not sure)