Global climate change threatens coral reefs by
A) decreasing the temperature and increasing the pH of the oceans.
B) decreasing both the temperature and the pH of the oceans.
C) increasing the temperature and decreasing the pH of the oceans.
D) increasing both the temperature and the pH of the oceans.
C
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An electric motor and electric generator are
A) very similar devices. B) entirely different devices.
The greatest diversity (numbers of different species) of organisms can be found in ________
A) insects B) birds C) flowering plants D) fish E) mammals
In order to demonstrate true skill, a forecast must do a better job than a climate-based prediction
Indicate whether the statement is true or false
Which of the following statements about solid solution minerals is true?
a. two minerals with the same chemical composition can have different internal structures b. a mineral can have a variable internal structure depending on the chemical composition c. two ions can substitute in a mineral in various proportions without changing the internal structure d. none of the above