According to this figure, what can directly use atmospheric N2? 
Definitions:
Empty Love
A type of love characterized by commitment without intimacy or passion, often found in relationships that have endured beyond the dissolution of physical and emotional connections.
Groupthink
Kind of thinking that occurs when people place more importance on maintaining group cohesiveness than on assessing the facts of the problem with which the group is concerned.
Challenger Disaster
A catastrophic event when the Space Shuttle Challenger broke apart shortly after liftoff on January 28, 1986, leading to the deaths of all seven crew members.
Bay Of Pigs
The Bay of Pigs refers to a failed invasion of Cuba in 1961 by a CIA-sponsored paramilitary group aiming to overthrow Fidel Castro's communist government.
Q16: Smooth endoplasmic reticulum<br>A) stores calcium ions in
Q18: Which environmental factor has a direct effect
Q19: You start to fall but then catch
Q19: The growth that pushes a root down
Q21: What effect does curare likely have on
Q21: Which class of hormones produced in the
Q35: The major cause of tropical deforestation is<br>A)
Q51: In many dense forests, plants living near
Q52: Sterilization, in which sperm are surgically prevented
Q56: Which of the following is an amino