Wind is to a wind farm as what is to hydropower?
A. hydrogen gas
B. flowing water
C. solar energy
D. steam
E. hot salt
Answer: B
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The observation that most aquatic vertebrates (e.g., fish, penguins, and whales) have streamlined bodies and fins or flippers for steering are a result of
A. artificial selection. B. convergent evolution. C. analogous selection. D. vestigial selection. E. sexual evolution.
The primary role of bile salts during digestion is ____
a. osmoregulation b. to kill bacteria that may have been consumed c. to coat fat droplets and separate them into small droplets d. to drive the enzymatic digestion of fats e. to drive the enzymatic digestion of proteins
A goiter is caused by a deficiency in ____
a. thyroxine b. triiodothyronine c. calcium d. iodine e. both thyroxine and triiodothyronine
Glucagon is produced by the
a. adrenal cortex. b. adrenal medulla. c. thyroid. d. kidneys. e. pancreas.