Why do we need these macromolecules? To grow
To repair wounds
To reproduce
All of the above

all of the above

Explanation:

Food provides the body with the nutrients it needs to survive. Many of these critical nutrients are biological macromolecules, or large molecules, necessary for life. These macromolecules (polymers) are built from different combinations of smaller organic molecules (monomers).

there really is life in the deepest part

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !