I would say either 2 or 4, but 4 is more likely. New mutations can cause the finch to be able to eat larger seeds, or it can cause it to not be able to eat large things. The environment can also be a big factor. Finches living in the trees are closer to the seeds and the finches living in the logs are closer to the insects.
Land use goes up as human population goes up. This is because the more people there are alive, the more land that people will be using. Hope this helps :)
A polyp is a small clump of cells that form in the colon. Most of the time they are harmless but they could develop to be colon cancer which is the reason the polyp needed to be removed.
