Answer: Three
Reason/Explanation:
The cat, you and the dog are all different populations. Together, there are three populations.
-DustinBR
Answer:
4 the cube with many circles in it or box C
3 objects that float paperclip, feather, air molecules, sticker objects that sink book, phone, human, plate.
2 ?
Explanation:
I believe that the answer should be D. Cell cycle.
