The gases in our atmosphere trap heat and block it from escaping our planet. This is called the ________ ________.

A country that has a highly developed economy and advanced technological infrastructure.

A species of animal or plant that is seriously at risk of extinction.

The rise of ________ ________ is caused primarily by two factors related to global warming: the added water from melting ice sheets and glaciers and the expansion of seawater as it warms.

Coal, oil and natural gas are all examples of ________ ________.

The use of nuclear reactions to produce electricity.

If we are to stop global warming, we must urgently reduce our ________ ________.

A period of unusually hot weather that typically lasts two or more days.

The primary greenhouse gas emitted through human activities.

Agricultural countries that are seeking to become more advanced economically and socially.

Carbon dioxide, methane and nitrous oxide are all examples of ________ ________.

The conversion of renewable energy from sunlight into electricity.

Thick layers of ice and snow that cover large areas of land. You’ll usually find them in the North and South Poles of the Earth.