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Read the paragraph below and answer the questions that follow.
(1) Energy sources can be divided into two groups: nonrenewable sources and renewable sources. (2) The first group, nonrenewable sources, includes the energy sources that are in finite supply and will eventually be depleted. (3) Fossil fuels, which include coal, petroleum, and natural gas, are in this category. (4) They are obtained from deposits in the earth that were formed from living matter during previous geologic eras. (5) When these deposits have been emptied, these energy sources will no longer be available. (6) The second group contains renewable energy sources. (7) Energy produced by wind, water, the sun's rays, and the heat of the Earth, for example, will always be available because these sources continuously regenerate as they are consumed. How many categories are there?
Müller-Lyer Illusion
A visual illusion where two lines of the same length appear to be of different lengths due to the orientation of arrow-like figures at the ends.
Buildings
Structures constructed by humans for residential, commercial, industrial, or public use, typically providing shelter or space for activities.
Telephone Poles
Tall posts used to support overhead power lines and various other public utilities, such as electrical cable, fiber optic cable, and related equipment such as transformers and street lights.
Cross-Modal Perception
A process whereby the brain integrates information from more than one sense.
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