Because once they are all gone we will not get them back for several millions of years or we may never get them back
Answer:
nitrogen gas and oxygen gas.
Explanation:
78% of earths atmosphere is made up of nitrogen and 21% is made up of oxygen.
Answer:
It is the sense of "a nation as a cohesive whole, as represented by distinctive traditions, culture, and language." National identity may refer to the subjective feeling one shares with a group of people about a nation, regardless of one's legal citizenship status
Climate change,Deforestation,<span>Pollution</span>