I think , The amount of dissolved oxygen in water may decrease because of the <span>increase in organic matter in the water.</span>
I believe the answer is the nucleus
Answer:
Eight Neutrons
Explanation:
Water consists of 2 Hydrogen atoms and 1 Oxygen atom.
Oxygen contains 8 protons, 8 neutrons and 8 electrons.
Because they have fossils of the back in the past and you can still see them now
Ciliates/flagelates/ amebozoa hope I spelled it right