The greenhouse effect is associated with what negative phenomenon, blamed mainly on human activity?
advanced warming
cool warming
ice crushing
global warming
Recent global warming is due mainly to human actions. Burning fossil fuels adds carbon dioxide to the atmosphere. Carbon dioxide is a greenhouse gas. It’s one of several that human activities add to the atmosphere. An increase in greenhouse gases leads to greater greenhouse effect. The result is increased global warming. Figure below shows the increase in carbon dioxide since 1960.