UHhHh, B? That should be correct... but uhh, I’m an idiot.
optical telescope (Hubble), X ray telescope ( Chandra) etc.
get around the Earth's atmosphere so that we can get a clearer view of the planets, stars, and galaxies that we are studying.
Factors which caused an Increase in Air Pollution in China:
A.) Coal Combustion
B.) Slash and Burn
C.) Excessive disposal of Garbage into Open Area
Hope this helps!