The phosphorus cycle differs from the others in that
A) phosphorus is more readily available in the atmosphere
B) phosphorus is not readily available in the atmosphere nor in the oceans
C) phosphorus is available in huge amounts in the ocean
D) phosphorus is a metal
Correct Answer:
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Q10: Select the true statement.
A)Nitrogen gas and oxygen
Q11: The average time that an atom of
Q12: The compartments of our planet are
A)hydrosphere, lithosphere,
Q13: The geosphere of our planet is composed
Q14: The only significant way oxygen (O2) enters
Q16: Which cycle requires photosynthesis?
A)carbon cycle
B)nitrogen cycle
C)sulfur cycle
D)phosphorus
Q17: Which of the following produces useful nitrogen
Q18: Which of the following cycles does not
Q19: Why is nitrogen an element one would
Q20: Why is oxygen NOT an element one
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