Answer:
Carbon dioxide stays in the atmosphere for approximately 100 years. The amount of carbon dioxide taken out of the atmosphere by plants is almost perfectly balanced with the amount put back into the atmosphere by respiration and decay.
It was a vital commercial and military trail.
Answer- A: Air conditioning
Explanation-
Florida is usually very muggy, hot, and humid in the summer, this causes buildings to increasingly get warmer minute by minute because they didn’t have air conditioning. Also factories themself are warm due to the machines and all the people inside. But, once the air conditioning came around, this caused an easier environment to work in.