Which organelle is present in a prokaryotic organism, but in a primitive form?

How are the tortoises that darwin observed on the galápagos islands similar to the anoles that losos studied

Why do carbohydrate molecules function so well as fuel for the body?

!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.