After the Isthmus of Panama formed, marsupials invaded North America and were very successful
a. True
b. False
False
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There is little threat of a tsunami striking the crowded beaches of Southern California.
Answer the following statement true (T) or false (F)
Dolphins and porpoises emit sounds from their ________
A) blowhole B) junk C) melon D) museau du singe E) nostril
In which of Köppen’s climatic types are the average temperatures of the coldest month below 18°C (64°F) and above –3°C (27°F)?
a. tropical moist climates b. dry climates c. moist mid-latitude climates with mild winters d. moist mid-latitude climates with severe winters e. polar climates
Market failure describes a situation in which the market itself ______________________ in a way that balances social costs and benefits.
A. remains outside the transaction B. incurs the costs outside the production process C. fails to allocate resources efficiently D. avoids externalities