What organisms convert gaseous nitrogen into ammonium or nitrates that can be used by plants?
A) tertiary consumers
B) nitrogen-fixing bacteria
C) fish
D) legumes
E) corn and other grains
Correct Answer:
Verified
Q28: Which of the following food chains
Q29: Increased carbon dioxide concentrations may contribute to
A)ozone
Q30: The carbon source for a heterotroph is
A)breathing
Q31: Which of the following is not true
Q32: Coniferous forests are found across Canada and
Q34: Which greenhouse gas also destroys the ozone
Q35: Which trophic level usually contains more energy
Q36: Which of the following is true regarding
Q37: Which biome is home to almost half
Q38: Which of the following is the best
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