Ozone disappearance is a problem. It is because it allows the UV rays to pass through.
It is because of CFC's. They react with ozone to deplete it.
There have been various experiments measuring the ozone layer. The ozone over the poles is seen to have depleted.
We don't know. That's what makes it a "disappearance" and not a "failed colony"
The benefits of the number system is that everyone all over the world, despite their language can know what a math problem is asking. This makes it extremely easy for scientists in America to communicate with scientists in say, China.
Data Link Layer
CFC's are the reason. They react with ozone to deplete it and makes the layer thin.
The innermost layer is the bone marrow.
The part of Earth's rocky outer layer that makes up the landmasses is the what ?
a. Extracellular layer b. Cytoplasmic layer
to protect the earth to heat makes of sun
A double layer of phospholipids makes up the plasma membrane.
Everybody it has to be justin bieber