Which of the following statements is true of nuclear fusion?
A) The mass of the products is greater than the mass of the reactants, and energy is absorbed.
B) The mass of the products is greater than the mass of the reactants, and energy is released.
C) The mass of the products is less than the mass of the reactants, and energy is absorbed.
D) The mass of the products is less than the mass of the reactants, and energy is released.
D
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Bacteria and fungi are typically categorized as which of the following ecosystem components?
a. Autotrophs b. Producers c. primary consumers d. tertiary consumers e. Decomposers
The tendency of a dissolved contaminant to volatilize into the vadose zone is estimated by the:
a. octanol-water partition coefficient b. Henry's constant c. matric potential d. density
If you are concerned about purchasing fish from health thriving fisheries, which of the following should you avoid?
A) Arctic Char (farmed) B) Catfish (US farmed) C) Cod: Pacific (US non-trawled) D) Salmon (Alaska wild) E) Tuna: Canned (except troll/pole)
Small island nations such as the Maldives are in the international spotlight because they ________
A) are the largest emissions producers in their respective areas B) opposed China's proposals for global carbon neutrality at the Copenhagen Conference in 2009 C) may be among the first nations to be completely flooded by rising sea levels D) have exceeded the emissions reductions set by the Kyoto Protocol E) are accepting climate change refugees from other nations