An increase in atmospheric CO2 concentrations will most likely ...

[ts19998]

An increase in atmospheric CO2 concentrations will most likely lead to __________ in the
  troposphere and __________ in the upper atmosphere.
  a. warming, warming
  b. cooling, warming
  c. warming, cooling
  d. cooling, cooling

Question 2

It appears that, as the number of sunspots increases, the sun's total energy output:a.
   increases slightly
  b. decreases slightly
  c. begins to alternately increase and decrease above average values
  d. does not change

[ky860224]

Answer to Question 1

c

Answer to Question 2

a

[ts19998]

Thanks for the timely response, appreciate it

[scikid]

Excellent