I don't know the first one but I think I know II
there there are more people people in cities than there are in rural areas and because of this more people will breathe cough get sick and pull it the air. plusplus there are no plants to keep the air clean but there are plants in rural areas.
graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat
dang that balls went far
Why do you think tha...