Atmospheric scientists often measure gases in parts per million ...

[Bob-Dole]

Atmospheric scientists often measure gases in parts per million by weight (ppm). If CO2 is currently 0.04 of the atmosphere, the level expressed in parts per million is
 
  A) 4 ppm.
  B) 4000 ppm.
  C) 400 ppm.
  D) 0.004 ppm.

Question 2

In preparation for the construction of a new large subdivision, over 500 acres of hilly forest are cleared. In this cleared region, we will expect that
 
  A) more species of birds and insects will inhabit the region.
  B) a drainage system and landscaping will need to be designed to limit erosion.
  C) the overall productivity of the region will increase.
  D) the levels of carbon dioxide in the air will sharply decline.

[mjbamaung]

Answer to Question 1

C

Answer to Question 2

B

[Bob-Dole]

Thank you

[mjbamaung]

Happy to help you