Multiple Choice
Plants are able to take up and use nitrogen only when it is available in what form(s) ?
A) ammonium only
B) nitrate only
C) N2 only
D) nitrate and ammonium
E) ammonium and N2
Correct Answer:

Verified
Correct Answer:
Verified
Q4: Oil and natural gas formed over hundreds
Q5: Carnivores must be at or above which
Q6: Biological magnification can be defined as the
Q7: Animals obtain minerals such as phosphorus primarily
Q8: Some energy gets stored in molecules that
Q10: Which organisms would be part of a
Q11: What is the major reservoir of phosphorus?<br>A)atmosphere<br>B)sedimentary
Q12: Primary production is the _.<br>A)rate of photosynthesis<br>B)rate
Q13: Match the trophic category to the correct
Q14: The _ cycle is a sedimentary cycle.<br>A)carbon<br>B)water<br>C)nitrogen<br>D)phosphorus<br>E)calcium