Two birds exist in the tropics. Bird A lays its eggs in the nest of the bird B. The eggs of bird A look like those of bird B. Bird B raises the young of bird A, which eat flies that bother only bird B. What type of relationship is this?

Why do you think water is so important to living things

What do all macromolecules have in common with each other? oa. they all are formed from the same elements.ob. they all have major roles in cell membranesoc. they all act as catalysts in the body.od. they all have peptide bonds between carbon atoms.

Theories basic to all of the life sciences include the germ theory of disease. theory of evolution by natural selection. o two of these answers are correct none of these answers are correct o cell theory.