The cones of the jack pine (Pinus banksiana) are serotinous, only ...

[soccerdreamer_17]

The cones of the jack pine (Pinus banksiana) are serotinous, only opening when exposed to intense heat. This is an example of
 
  A) primary succession.
  B) eutrophication.
  C) secondary succession.
  D) pioneering.
  E) fire adaptation.

Question 2

A mT air mass ________ than a cT air mass.
 
  A) forms over an ocean and is usually less humid
  B) forms over tropical rainforests and is usually less humid
  C) forms over an ocean and is usually more humid
  D) forms under the equatorial low and is usually less humid
  E) forms over tropical rainforests and is usually more humid

[Sassygurl126]

Answer to Question 1

E

Answer to Question 2

C

[soccerdreamer_17]

Excellent

[komodo7]

TYSM