Select the correct answer from the list.(2 points) Over the past century, the concentration of greenhouse gases in the atmosphere has . This has led to heat being held in the troposphere, where infrared radiation is likely to encounter a greenhouse gas molecule and be .

Question

Select the correct answer from the list.(2 points) Over the past century, the concentration of greenhouse gases in the atmosphere has . This has led to heat being held in the troposphere, where infrared radiation is likely to encounter a greenhouse gas molecule and be .
-increased 
0waved up and down 
-been changed 
-decreased 
-more 
-less
-the same amount of 
-less 
-more 
-reflected down 
-transmitted 
-absorbed and re-emitted

GPT-4o mini · Answer

Over the past century, the concentration of greenhouse gases in the atmosphere has **increased**. This has led to heat being held in the troposphere, where infrared radiation is likely to encounter a greenhouse gas molecule and be **absorbed and re-emitted**.