After one species disappears, the other species in the ecosystem

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.

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

Does masterbation affect height growth or loss of growth hormone?