Answer:asteroid,planet,star,nebula,galaxy, and universe
Explanation:I’m not actually sure im just smart
<span>The greatest concentration of nitrogen on the Earth is found in its atmosphere. The atmosphere is approximately 78 percent nitrogen. and second one bacteria</span>
No system is closed off by it surroundings.
A. punnet square The punnet square is used to help determine genetic things using the parents as a guide like the color of a rose if something will be tall or short hope you ask more Qs like this i # luv science. heheheheheh hahahahahaha
