Which statement is true about BRCA1 and BRCA2 genes?

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.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

List five ways we are indebted to phytoplankton