Light from a candle has a certain brightness 1 m away. At 4 m away its brightness is
A. one-quarter as much.
B. one-eighth as much.
C. practically the same.
D. one sixteenth as much.
Answer: D
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Ethanol production has resulted in
A. decreased water usage. B. increased transportation emissions. C. decreased the number of malnourished people. D. decreased prices for corn-based food products. E. increased prices for corn-based food products.
Which of the following is not true of soil texture?
A) It can be modified substantially by humans. B) It exerts a major control on the soil's fertility, stability, and other properties. C) It describes the size distribution of the particles in a soil. D) It can be described using a triangular plot of the percentage of sand, silt, and clay.
The total fertility rate is the number of children born
A. To the average woman per year B. In a population during an entire generation C. To the average woman during her lifetime D. In a population during a single year E. In the world during a single year
What is one environmental benefit of affluence?
A. Increasing wealth allows for an increased capacity for resource consumption. B. Increased wealth provides resources to apply toward the creation of environmentally beneficial technologies. C. Increasing affluence often leads to a desire to travel widely and frequently in order to see the world. D. Increasing affluence in developed nations leads to increased affluence in less-developed countries. E. Increasing affluence results in less consumption in all countries.