Question

Residence time is the amount of time in which a substance remains in a reservoir, such as the atmosphere. For example, the residence time of carbon tetrafluoride (CF4) in our atmosphere is more than 50,000 years. In contrast, carbon dioxide (CO2) has a residence time that is much shorter. Which statement best explains how the residence time of a substance affects the atmosphere?

A>Substances that have a longer residence time are more beneficial to the atmosphere.
B>Substances that have a shorter residence time make up a smaller portion of the atmosphere.
C>Substances that have a longer residence time will cycle faster through the atmosphere.
D>Substances that have a shorter residence time do not stay in the atmosphere as long.

Answer 1

D. substances that have a shorter residence time do not stay in the atmosphere as long such as carbon dioxide because it is constantly being used to fuel the process of photosynthesis

hope that helps :))

Answer 2

The correct answer is option D

The Residence time is the amount of time in which a substance remains in the atmosphere.

The residence time of CF4( carbon tetrafluoride) is 50,000 years which states that it will stay in the atmosphere for 50,000 years.

The substance that have a shorter residence stays for a shorter time in the atmosphere and gets recycled over a short period of time.