Nitrogen,<span>The atmosphere is composed of ~78% nitrogen and ~21% oxygen, with small amounts of other gases. The bulk composition of the earth by weight is mostly, iron, oxygen, silicon and magnesium, in that order, with all the other elements making up only about 5% of the earth's weight.</span>
A Star fish
Radial symmetry is when it all comes out from one point (the middle)
Answer:
B) A difference in pressure across a distance.
Answer:
Heriditary
Explanation:
Heriditary traits are genetic traits that get passed down.
It's B
Hope that helps, Good luck! (:
