Answer:
2, 3, 4 should all work although possible 1 as well
Explanation:
honestly any non petroleum and coal energys ource helps pH of water
Nucleus. it’s the main part that sorts and tells cells what to do and where to go.
Insect Compound Eye vs. Human Eye. Insects and humans have very different types of eyes, but each has advantages and disadvantages. ... The quality of its vision is much higher than that of a compound eye, and it has a much more complex construction
Ionic bonding?
the bonding between non-metals and metals
non-metals form negative ions, so they are attracted to metals, which form postive ions
