One that tested food preference in caterpillars, and another that tested for egg-laying preferences in adult butterflies. What
were the results of those two experiments, and what did those results imply?

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because