17. Which of the following is a natural pesticide that's sometimes applied to organic crops?
O A. Nitrogen
B. Organophosphates
C. Nitrate
D. Neem oil

Which system revise and send electrical signals throughout the body

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.

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because