Refer to the figure.
Heterotroph diets can be determined by measuring and comparing the ratios of stable isotopes in tissues. The figure shows C and N isotopic ratios for cave bears and Pleistocene herbivores. Which of the following is true?
A) C isotopes are useful in separating herbivores from omnivores.
B) Omnivore N isotopes are more variable than herbivores because their diets are more variable than herbivores'.
C) Omnivore N isotopes are shifted 1-3% higher than herbivores.
D) At least one of the cave bears was primarily an herbivore based on their isotopic values.
Correct Answer:
Verified
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