OOO IM SMART ITS PROPHASE
Answer:
D.
Explanation:
I think its D. sorry if its wrong
Answer:
I think its A
Explanation:
Because the reason why airplane have closed windows is because we can't breathe in carbon dioxide when we go up. Of course there is oxygen just not a lot as we go up. Why would there be helium in the air? We would sound weird when we skydive.
Answer:
d
Explanation:
bacteria is a small rna and there are millions of them they are not big enough to have dna