Question

Commercial production of which of the following energy sources became practical only after large amounts of investment by the United States and other countries over the past half century? -nuclear -coal -wind -solar

Answer 1

The commercial viability of Nuclear, Solar, and Wind energy sources has largely been achieved due to substantial investment and research over the past half-century. These initiatives have led to technological breakthroughs enabling these resources to be used on a large scale.

Step-by-step explanation:

The commercial production of Nuclear, Solar, and Wind energy became practical only after substantial investment by the United States and other countries over the past half century. While coal has been used for centuries, the three aforementioned energy sources have only been capable of mass production relatively recently.

Substantial progress in making these energy sources commercially viable came about due to significant investments in research and development. These endeavors resulted in technological breakthroughs that made it possible for these energy sources to be tapped and used on a large scale.

For instance, while the principles behind nuclear energy had been known since the early 20th century, it was only with the creation of the first energy-producing nuclear reactor in 1951 that nuclear energy became a practical source of power. The rapid decrease in the price of solar energy is another example of how large-scale investment has made an energy source commercially viable.

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