Question

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Which is a possible consequence of decreasing air quality resulting from global warming?

drying out of fertile lands
flooding of low-lying coastal areas
melting of glaciers and polar ice caps
decrease in population due to health threats

Answer 1

A decrease in population due to health threats is a possible consequence of decreasing air quality resulting from global warming

What is global warming?

Global warming refers to the influx in temperature of the surface of the Earth due to a rise in the concentration of greenhouse gases eg,$CO_2$, NO etc and a decrease in oxygen level in the atmosphere.

• As the level of 02 goes down and greenhouse gas levels increase, the disease occurrence is also elevated. Toxic metals like arsenic in the polluted air can be deathly to human health.
• The pollutants in the air from exhaust get lodged in the lungs and cause lung diseases like bronchitis, lung cancer etc.

• The spread of such diseases results in increased mortality rates.

Incorrect options

• Drying out of fertile land is caused due to shortage of water and draughts instead of deteriorating air quality.
• Flooding of low lying coastal lands is caused because of high tides and excessive rain.
• While melting of glaciers and polar ice caps is a result of global warming.

Thus, a decrease in population due to health threats is a possible consequence of decreasing air quality resulting from global warming.

Answer 2

The consequence of decreasing air quality resulting from global warming is decrease in population due to health threats

Explanation:

1.Global warming is the long-term heating of Earth's climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning, which increases heat-trapping greenhouse gas levels in Earth's atmosphere.

2.Humans are increasingly influencing the climate and the earth's temperature by burning fossil fuels, cutting down forests and farming livestock.

3.This adds enormous amounts of greenhouse gases to those naturally occurring in the atmosphere, increasing the greenhouse effect and global warming.

4.Global warming is an aspect of climate change, referring to the long-term rise of the planet's temperatures. It is caused by increased concentrations of greenhouse gases in the atmosphere, mainly from human activities such as burning fossil fuels, and farming.