Question

Which sentence addresses the recent issue of global warming? Oceans hold tremendous amounts of water. However, this water is saline and non-potable. Some amount of water is present in the form of snow and ice at the polar caps. Only half a percent of water is present as freshwater reserve. Rising temperatures may melt the polar caps and increase the ocean water levels. Reset Next

Answer 1

The answer is; Rising temperatures may melt the polar caps and increase the ocean water levels.

Global warming is due to the increase in the levels of greenhouse gases, such as carbon dioxide, in the atmosphere. These gases trap reflected radiation from the earth that heat up the atmosphere. The warming atmosphere also warms the polar regions. This consequently results in the melting of glaciers and these melted waters flow into oceans increasing their water levels. Increased ocean levels eat up into the beach shores and also swallow up small islands.