An organic molecule contains two or more atoms of
A. carbon.
B. hydrogen.
C. oxygen.
D. All of these answers are true.
A. carbon.
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The courtship display of the wandering albatross is primarily a(n) ____display
a. acoustical b. visual c. chemical d. electrical e. tactile
On a molecular level, all organisms
a. show no similarities. b. have the same bases in DNA and RNA, the same amino acids in proteins, but use different genetic codes. c. use different means of storing genetic information. d. have the same bases in DNA and RNA, the same amino acids in proteins, and use the same genetic code. e. have the same bases in DNA and RNA, but different amino acids in proteins.
In which soils do most plants do best?
a. sandy soils b. soils made mostly of humus c. clay soils d. loams
Which body cavity contains the small and large intestines?
A. dorsal cavity B. vertebral canal C. cranial cavity D. pelvic cavity E. abdominal cavity