Answer:
cut down on fossil fuels and green house gasses
Explanation:
they are thickening the atmosphere so when the Suns rays enter earth they can't escape
George Washington was the first president
Answer:
Require all aircraft to immediately land
Explanation:
The government wanted to be able to easily identify hijacked planes as well as make sure no other flights would get hijacked after WTC 2 was hit on 9/11