Which element besides carbon, hydrogen and oxygen makes up the most mass of plants?
A) nitrogen
B) helium
C) molybdenum
D) iron
E) phosphorus
Correct Answer:
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Q16: What is the energy source that is
Q17: Humans are _.
A)primary consumers
B)secondary consumers
C)tertiary consumers
D)all of
Q18: Which of the following would not illustrate
Q19: Anything that eats a producer is called
Q20: Which of the following is not a
Q22: What are the major natural sources of
Q23: Even though a plant will often have
Q24: Which of the following statements is true?
A)Plants
Q25: Which of the following forms of nitrogen
Q26: What would happen to a forest without
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