________ is a nonrenewable resource.
A. Scientific technology
B. Biomass
C. Coal
D. Solar energy
E. Hydroelectric power
Answer: C
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A mechanic can lift cartons a vertical distance of 1 m, or roll them up a 2-m-long ramp to the same elevation. With the ramp, the applied force needed is
A. half as much. B. twice as much. C. the same. D. none of the above
Researchers were studying a population of birds on Daphne Major, one of the Galápagos Islands. A drought caused many plants on the island to die. There were few seeds left for the birds to eat. Small seeds, which were easy to eat, disappeared quickly. Larger seeds remained available. Birds with thicker beaks were better able to crack and eat these larger seeds. Which of the following statements about the population on Daphne Major is TRUE?
A. Birds with thick beaks are more likely to survive during the drought. B. Birds with thin beaks are more likely to survive during the drought. C. Birds with thin beaks and birds with thick beaks are equally likely to survive during the drought. D. It is impossible to tell from the information provided.
Advection fog:
A) is responsible for the Tule fog of the Central Valley of California. B) occurs when warm air passes over a cool surface. C) rarely travels more than 100 meters from its point of origin. D) is the result of adiabatic cooling.
In cultural eutrophication, fish die from ____.
A. acid deposition B. depletion of oxygen C. toxic substances in the water D. increased sediment reducing habitats E. loss of space