What is the primary difference between natural selection and artificial selection?
A. Natural selection results in evolution;
artificial selection does not.
B. Artificial selection is driven by humans.
C. Artificial selection relies on traits that allow
for greater reproductive success.
D. Natural selection may select traits that are
detrimental.
E. Natural selection is controlled.
B
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Stromatolites are rocklike columns composed of:
a. protists b. dinoflagellates c. microbial biofilms d. heterotrophic organisms e. photosynthetic eukaryotes
A facultative anaerobe can perform both aerobic and anaerobic respiration?
a. true b. false
Which of the following contain 70S ribosomes?
a) Prokaryotes b) Mitochondria c) Mitochondria and chloroplasts d) Prokaryotes, mitochondria, and chloroplasts
In humans, where does fertilization occur?
A. in the vagina B. in the fallopian tubes C. externally D. in the ovary