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The city council of Centerville pass a law requiring all new buildings to be outfitted with low-flow toilets instead of regular toilets. The low-flow toilets use approximately 2 less gallons of water per flush. What will be the most likely effect of this new law?

A. conservation of local freshwater supplies
B. increase in the habitat size for the area's wildlife
C. decrease in the amount of acid rain falling in the area
D. pollution of the local groundwater

Which of the following best describes why tidal energy is considered a renewable energy resource?

A. Ocean water will never be exhausted.
B. Tidal energy is replaced naturally by the Moon's gravity.
C. Humans can create more tidal energy by setting up more tidal energy plants.
D. The Moon receives energy from the Sun, which is a renewable resource.

Why are biomass sources, such as wood and manure, considered renewable resources?

A. because they can be replaced at the same rate as they are used
B. because they can be used in fertilizers
C. because they can minimize pollution
D. because they can be used to generate electricity

The graphs below show energy usage and sources in the U. S. .Using the graphs, which of the following is true?

A. 37% of energy usage is due to transportation.
B. Nonrenewable resources make up about 93% of the sources of energy.
C. Hydroelectricity makes up 23% of the sources of energy.
D. Residential energy usage makes up 16% of the total energy usage.