Answer:
The presence in the air of one or more contaminants in such a concentration and of such duration as to cause a nuisance or to be injurious to human life, animal life or vegetation.
Answer:
The Midwestern U.S mainly has a "humid continental climate"
Explanation:
A "humid continental climate" has 4 seasons and large temperature changes between seasons. It typically has warm to hot (sometimes humid) summers and cold (sometimes very cold in the northern areas) winters.
Whatever fossil is at the lowest layer is the oldest cuz the old fossils lived along time ago and when they died the fossils were buried.
Answer:
ikd lol, its the future so
