1) This is a phenomenon in which
the average surface
temperature of the Earth
increases.
2) This is a natural process that
warms the Earth face but
is getting intense because of
increasing amount of
greenhouse gases that are
being trapped in the
atmosphere.
3) This is formed when ozone
forms air pollution, and is
referred to as the combination
of smoke and fog
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Answer:
1. Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels.
2. GLOBAL WARMING Throughout its long history, Earth has warmed and cooled time and again. Climate has changed when the planet received more or less sunlight due to subtle shifts in its orbit, as the atmosphere or surface changed, or when the Sun’s energy varied. But in the past century, another force has started to influence Earth’s climate: humanity.
3. The word "smog" was coined in the early 20th century, and is a contraction (portmanteau) of the words smoke and fog to refer to smoky fog due to its opacity, and odor. ... This kind of visible air pollution is composed of nitrogen oxides, sulphur oxides, ozone, smoke and other particulates.