1 part per billion by weight, 0.2 parts per billion by moles.
4
supernovae
A lot
there is a lot of gold found in the earth maybe about 10% in the world write now...........
22%
0.3
The distance from Earth to the sun is much greater than from Earth to the moon. It is not possible that the sun would be between Earth and the moon.
I think because pluto is farther from the sun than earth the nitrogen is probally frozen so there is not as much and it is colder than the nitrogen found on earth
Africa, but that doesn't help much probably. Keep searching!!
there are birds,insects,mammals,amphibians and much more
The moon is made of rock much like that found on Earth.
99%