As chemical pesticides move through the trophic pyramid, they may ...

[mckennatimberlake]

As chemical pesticides move through the trophic pyramid, they may become increasingly concentrated at each higher level in a process called
 
  A) pyramidal decay.
  B) trophic cascading.
  C) competitive exclusion.
  D) bioremediation.
  E) biological amplification.

Question 2

________ are topographic steps on both sides of a river valley resulting from river entrenchment into its own floodplain
 
  A) Entrenched meanders
  B) Oxbow lakes
  C) Nickpoints
  D) Levees
  E) Alluvial terraces

[amcvicar]

Answer to Question 1

E

Answer to Question 2

E

[mckennatimberlake]

Thanks for the timely response, appreciate it

[nothere]

Excellent