A(n) ________ has been used to estimate that humans began to wear clothing between 83,000 and 170,000 years ago
A) parsimony analysis
B) outgroup comparison
C) molecular clock
Answer: C
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Nadia, who is 25 years old, wants to be taller because she is just 5 feet tall. Of the choices given, which would be the wisest option for Nadia?
A) Do nothing. B) Take injections of growth hormone. C) Use GHRH so she will have her own natural growth. D) Take thyroxine daily.
Which of the following would you classify as something other than an animal?
A) sponges B) coral C) jellyfish D) choanoflagellates
Camptodactyly causes ____
a. bent, immobile little fingers b. breathing difficulties c. loose joints d. muscle deterioration e. near-sightedness
Which pollutant is formed by the interaction of sunlight and atmospheric chemicals?
a. carbon dioxide b. nitric oxide c. sulfuric oxide d. chlorofluorocarbons e. photochemical oxidants