Which of the following statements about early societies is NOT true?
A) One unit of human energy could produce up to ten units of food energy.
B) Most of the energy came from renewable resources.
C) Early agricultural practices rapidly depleted nutrients in the soil.
D) A portion of the energy from food was invested in shelter and clothing.
Correct Answer:
Verified
Q1: In 1957,Clear Lake in California was sprayed
Q2: Of the following pesticides and their LD₅₀s
Q4: An early source of phosphorus for agriculture
Q5: Plants incorporate phosphorus into
A)amylopectin.
B)RNA.
C)bacteria.
D)phosphoric acid.
Q6: Which fertilizer is also an explosive?
A)NBr₃
B)NH₄NO₃
C)NaI
D)Sr₃(PO₄)₂
Q7: Which of the following statements about humus
Q8: The Haber process results in
A)the conversion of
Q9: The LD₅₀ for aldicarb in rats is
Q10: DDT is particularly harmful to birds because
Q11: Uptake of potassium ions from the soil
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