Greenhouse effect can cause ?

Greenhouse effect can cause warming of Earth.

Global warming is the gradual increase in global temperature over a period of time, mainly caused by the increasing concentration of greenhouse gases like carbon dioxide, methane, and carbon monoxide in the atmosphere. These gases  act as a blanket wrapped around the earth and are formed by the burning of fossil fuels, and the exhaust of automobiles.

Greenhouse gases like carbon dioxide trap heat and increase the temperature of the earth's surface thereby changing the weather conditions. Increased temperature results in the melting of glaciers, thus can increase the level of the sea and ultimately causing coastal flooding.

Hence the correct answer is option B.