Air pollution consists of chemicals in the atmosphere that pose serious health and environmental threats. Truth, or False​

true

Explanation:

we have so much pollution in the air with all the chemicals that we use over time, it's killing the ozone layer and us as well.

the main reason the us senate rejected the treaty of versailles was because "european nations wanted to punish germany"

d(:

me and mark as brainliest.

the right answer is the third one: turnpikes went short distances to connect markets. turnpikes, also known as toll roads, were very important for trade and transportation (of people, goods and products) in the 19th century, coinciding with the expansion towards the west. they contributed significantly to the economic development of the united states.