According to the International Union for Conservation of Nature (IUCN), about ____% of all known amphibian species are threatened with extinction.
A. 15
B. 24
C. 33
D. 49
E. 67
Answer: C
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According to the Stefan-Boltzmann law, which of the following statements expresses the radiative energy emitted by one square metre of an object?
A. It is equal to a constant multiplied by its temperature, raised to the negative third power. B. It is equal to a constant multiplied by its temperature, raised to the second power. C. It is equal to a constant multiplied by its temperature, raised to the fourth power. D. It is equal to a constant multiplied by its temperature, raised to the tenth power.
The Pacific has a thinner layer of pelagic sediments than the Atlantic due to fewer rivers and an
increase in trenches. Indicate whether the statement is true or false.
Which of the following correctly depicts the pathway of the transfer of genetic information?
A) DNA ? RNA ? protein B) RNA ? DNA ? protein C) protein ? DNA ? RNA D) DNA ? protein ? RNA
The beach face is located in which of the following zones?
a. backshore b. foreshore c. offshore d. none of the above