Answer:
B. Free-radical theory
Explanation:
The free radical theory statutes that <em>ageing is the result of the accumulation of the damage to cells and tissues caused by reactive oxygen species</em> as a result of aerobic metabolism.
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Answer:
Coal, gold, silver etc.
Explanation:
North America is a big manufacturer of coal, which is mostly used in the energy sector.
Bauxite is a mineral that is used to make aluminum.
Iron and copper are two metals that are used in the development of infrastructure and a variety of other items.
Nickel is used to make steel, that is exported all over the globe by U.S. Companies.
The south west of the country is home to gold mines.
Answer:
The right to vote in an election
Explanation:
African Americans didn't get the right to vote until 1965 when the Twenty-fourth Amendment was made. It was then that the related laws, voting rights have been legally considered an issue related to election systems. While on the other hand, the right of women to vote in elections begins in the mid-19th century.
District of Columbia residents have no representation in the Senate. The Twenty-third Amendment, adopted in 1961, entitles the District to the same number of electoral votes as that of the least populous state in the election of the President and Vice President.
Lastly, 18 years old rights to vote was considered after the Twenty-sixth amendment. This amendment was important to the Student Movement because they declared that if they were old enough to be drafted into a war they were against, then they should be old enough to vote against and have a voice in their government. It was proposed by Congress on March 23, 1971, and ratified on July 1, 1971, the quickest ratification of an amendment in history.