How many unpaired electrons does carbon have in its valence shell?
A. 1
B. 2
C. 3
D. 4
E. 8
Answer: D. 4
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The longest wavelength of visible sunlight is:
a. Blue b. Violet c. Red d. Yellow
Which of the following are used to generate biofuels?
a. single-celled algae b. crop plants c. multicellular algae d. any plants
Thinking of the examples in your book of adaptive radiation, in which of the following environments might you be most likely to find adaptive radiation?
A) in earthworms feeding on detritus B) among insects that are generalist feeders C) in fruit flies that feed on different yeast strains specific to different species of cacti in the desert D) among houseflies living in a garbage dump
A hominid thought to have displayed facultative bipedalism
A) founder effect B) Homo Habilis C) Latin binomial D) Australopithecus Africanus E) convergent evolution F) Ardipithecus ramidus G) Neanderthals H) chimpanzees I) Homo erectus J) astragalus