Multiple Choice
The pool of a phosphorus compartment is 645 units.Two fluxes enter the pool: one is 13 units per day;the other is 34 units per day.Two fluxes leave: one is 22 units per day;the other rate is unknown.If the pool of phosphorus is balanced,the size of the second outgoing flux is _______ units per day.
A) 12
B) 25
C) 47
D) 72
E) 645
Correct Answer:
Verified
Correct Answer:
Verified
Q112: Carbon dioxide,water,methane,and nitrous oxide are all examples
Q113: The Keeling curve has provided more than
Q114: The first time scientists hypothesized that changes
Q115: The nutrient phosphorus,which is stored in rocks,is
Q116: How do scientists expect communities to change
Q118: The only group of organisms capable of
Q119: A large river that empties into a
Q120: Organisms remove nitrogen from the biosphere and
Q121: Greenhouse gases absorb photons from the _
Q122: In ocean environments,the highest net primary productivity