The mass of a population of fish present at a given time is called its ________
A) diversity
B) fish stock
C) maximum sustainable yield
D) recruitment mass
E) standing stock
E
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In a battery, the following two oxidation-reduction reactions are taking place: rxn A: Zn + 2 OH- ? ZnO + H2O + 2e- rxn B: 2 MnO2 + H2O + 2e- ? Mn2O3 + 2 OH-What is undergoing oxidation?
A. Zn B. MnO2 C. ZnO D. H2O E. OH-
The production of hydropower is most strongly associated with
A) river resources. B) ground water resources. C) lake resources. D) arid environments. E) tropical environments.
The hydrologic cycle is driven primarily by
a. solar energy and gravity b. solar energy and the moon c. solar and mechanical energy d. mechanical and chemical energy e. chemical energy and the moon
This type of front has a mass of warm air cut off from the surface
A) warm front B) cold front C) stationary front D) occluded front