Answer:
between 25 and 40 degrees
Explanation:
Much pollution fills the air because of train s which let off steam that contains chemicals.
A key or legend is used to understand symbols, colors, and shapes on a map
It becomes a metamorphic rock, hence the name. Its "metamorphosis" is brought on by the heat and pressure.
Increased use of insulation in a home is very useful when it comes to having a better quality air in the home. With proper insulation, lots of the things that can cause an air pollution are neutralized. Dust and other pollutants are stopped on the filters and they can not get inside, thus allowing you to have a better quality air indoors.
