Herring are small ocean fish that often swim together in large schools. Though this behavior uses a lot of energy and can increase competition for resources, what advantages could this behavior have?

i believe the answer is a or 1

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

it would be heredity

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex