The answer is protons and electrons! Hope this helps :D
The primary colors are blue, red, and yellow.
Answer:
1 molecule of oxygen has 2 atoms.
So 2,25 molecules of oxygen have 2 x 2,25 atoms.
2 x 2,25 = 4,5 atoms
There are 4,5 atoms in 2,25 molecules oxygen.
The person is called a wildlife biologist.