Ribosomes nuclear membrane nucleus large cauole
They are a good choice because at any given time, you can find cells that are undergoing mitosis.
One reason of decline in honeybees is destruction of habitat with pesticide and global warming this decline in plants has had a direct impact to the decline of honeybees.
In a way, yes.
experiments need a hypothesis (this would correspond to "what they already believe") which has to be a specific proposal, not a question (e.g. turtles reproduce sexually)
their experiments proove (or, better said: test!) whether "what they already believe" is true.