A fish known for high levels of internal and external parasites is the:
A. billfish.
B. tuna.
C. ocean sunfish.
D. shark.
E. jellyfish.
Ans: C. ocean sunfish.
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Examine Figure 48.1 in your text illustrating human population growth. What pattern of growth are we currently exhibiting?
A. exponential growth B. logistic growth C. intrinsic growth D. geometric growth E. None of the above.
What might be a result of hunting sea otters to extinction for their fur?
A) loss of killer whales B) loss of sea urchins C) loss of kelp beds D) loss of barnacles
Insulin is a peptide hormone that controls the level of glucose in the blood. It is released from the pancreas as soon as you eat, even before blood glucose levels rise. This is an example of:
A. conditioning. B. positive feedback. C. negative feedback. D. feed-forward regulation.
Which of the following structures in females is analogous in function to the vas deferens in males?
A) urethra B) oviduct C) uterus D) vagina