Which of the following changes to Earth's atmosphere would increase the greenhouse effect Select all that apply.
increasing the concentration of CO2
increasing the number of N, molecules
decreasing the concentration of CH4
decreasing the amount of water vapor

Increasing the concentration of CO2

Explanation:

I might be wrong, don't try so sorry if i'm wrong!

the answer would be c

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min