Climate scientists construct ____________ ____________ of ...

[Zoey63294]

Climate scientists construct ____________ ____________ of atmosphere and ocean interaction in an attempt to
  predict future conditions based on past history and on assumptions relating to certain individual factors. Fill in the blank(s) with the appropriate word(s).

Question 2

The concentration of ____________ ____________ in Earth's atmosphere is the highest it's been in the last 10 million
  years. Fill in the blank(s) with the appropriate word(s).

[alvinum]

Answer to Question 1

mathematical models

Answer to Question 2

carbon dioxide

[Zoey63294]

YES! Correct, THANKS for helping me on my review

[6ana001]

Thanks for the timely response, appreciate it