Embryos of different species look very similar, which shows that the organisms share a BLANK ancestor.

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%