Salmon introduction in the Great Lakes has brought in millions of dollars from sportfishing, yet environmentally it has
A. decreased migratory bird populations.
B. improved water quality.
C. increased exotic invasive fish populations.
D. decreased native fish populations and disrupted spawning.
Answer: D
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The impulse-momentum relationship Ft = change in mv, applies to a fast-moving baseball hitting a bat with a force F. Then m in the equation is the
A. mass of the ball. B. mass of the bat. C. momentum of the ball. D. none of the above
Thermohaline circulation results in a global- scale "conveyor belt" that circulates water throughout the entire ocean system.
a. true b. false
A tidal barrage would be used to generate electricity
A) at the mouth of a bay. B) at the bottom of a large lake. C) near the tip of an ocean peninsula. D) in the open ocean.
Deficiency of which of the following is associated with anemia?
A) folic acid B) nicotinic acid C) riboflavin D) thiamine