I believe you use the pH scale with comparing acids and bases.
Answer:
B
Explanation:
Because most animals lives in the same area but we can classify them with the kind of OS cell they're made of because human and dogs can live in the same place but the os cell is what classify them like can you compare a dog with a human know only the human being is behaving senseless so my answer is B
Answer:
b. a cell takes in DNA from outside the cell.
It's the urinary one (D)
Explanation:
Immune system combats colds
Nervous system let's you feel things on your nerves
Skeletal is what joins your joints and helps you move
Hope this helped! :]
<u>(could I get brainliest?)</u>
