Which of the following types of pollution became much more common ...

[karen]

Which of the following types of pollution became much more common in the 20th century?
 
  A) Large-scale pollution in developing countries
  B) Small-scale regional pollution in developing countries
  C) Small-scale regional pollution in developed countries
  D) Large-scale pollution in developed countries

Question 2

Energy is lost as it moves from one trophic level to the next because
 
  A) one trophic level does not consume the entire trophic level below it.
  B) some of the calories consumed drive cellular activities and do not add mass.
  C) some ingested materials are undigested and eliminated.
  D) All of the above are correct.

[Brenm]

Answer to Question 1

A

Answer to Question 2

D

[karen]

Excellent

[Joy Chen]

Gracias!