Common thing is that their outmost shell is completely filled with the electrons. They are inert gases.
D. Cell membrane: surrounds a cell and allows substances to pass in and out
Answer:
it has to be a no cap !! buh
Answer:
One way is through fossil fuels. When people burn fossil fuels it enters the atmosphere as carbon dioxide gas. Another way is through animals. Most animals exhale carbon dioxide as a waste product which gets into the atmosphere.
