What biological macromolecule is made up of monomers like the one shown below?
a) carbohydrate
b) nucleic acid
c) fat
d) protein

Which sequence correctly shows the path of carbon dioxide during repiration?

Plz will mark! the diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Acommon kind of mechanical weathering is called