Why is it difficult to find intermediate fossils for organisms that have evolved under the punctuated equilibrium
model?
What will be an ideal response?
ANSWER: Evolutionary change in these organisms has been so rapid that relatively few intermediate
individuals lived, and so were unlikely to have been fossilized.
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In any one place, _____ different types of Anolis can coexist because they hunt food in different ways and in different parts of the vegetation
A. one B. two C. four D. six E. eight
Which of the following gases was not present in the Earth's early atmosphere but appeared after the
evolution of certain organisms? a. hydrogen b. methane c. nitrogen d. oxygen e. carbon dioxide
The type of selection most likely to act on a well-adapted population in a relatively constant environment is
A) directional. B) artificial. C) stabilizing. D) nonrandom. E) disruptive.
What type of medium has a composition that is chemically defined?
A) synthetic B) nonsynthetic C) complex D) infusion