What has led to the near elimination of kelp forests on the coasts of the United States?
a. The overfishing of American lobster and cod
b. All of these choices.
c. The increase of sea urchin populations.
d. The decline in sea otter population.
b
Biology & Microbiology
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Melanocytes ultimately arise from
A. the endoderm. B. the mesoderm. C. the ectoderm. D. the notochord. E. the neural tube.
Biology & Microbiology
The first case in an epidemic is called the ________.
A. index case B. break case C. prime case D. alpha case
Biology & Microbiology
A decrease in the affinity of hemoglobin for oxygen caused by the binding of a hydrogen ion to hemoglobin is described by the
A) Henderson-Hasselbalch effect. B) Bohr effect. C) carbamino effect. D) respiratory quotient. E) Haldane effect.
Biology & Microbiology
Oxygen-poor blood from the body first enters the heart in the ______.
a) right ventricle b) left ventricle c) right atrium d) left atrium e) coronary vein
Biology & Microbiology