In your own words, what is the purpose of the lab
the lab were talking about is atmosphere

Purpose provides the wider view; it answers the why question, why you are doing the lab in the first place. Instead of focusing just on the specific actions of the experimental procedure, purpose looks at the experimental procedure within the context of what you are supposed to be learning.

Explanation:

the answer is a) james madison.

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.