Which of the following represents an increase in living standards over the past century? Check all that apply. Increased human activities have magnified the pollution of air and water. The purchasing power of a dollar has declined over time due to inflation. Medical breakthroughs enable people to enjoy better healthcare nowadays.

Medical breakthroughs enable people to enjoy better healthcare nowadays.

Explanation:

An increase in living standard means that the lives of people are better off.

Advances in medicine have made it possible to find cure to various diseases. This improves standard of living.

Increased pollution of air and water and decline of dollar value have negative effects on living standard.

Pollution affects human health negatively and can cause diseases which negatively affect standard of living. Also, pollution can cause floods and other environmental disasters. Floods can displace people from their homes and this affects standard of living negatively.

Decrease in dollar value has made items more expensive.

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