Question

what is the function of greenhouse gases? a they trap heat energy from the sun, warming earths atmosphere to help sustain life. b they help scatter sun rays and reflect them back into space. c they trap harmful substances in the air that can cause diseases among living beings. d they increase earths temperature drastically by capturing more sunlight.

Explanation:

Greenhouse gases like carbon - dioxide, methane etc. absorb and trap heat energy from the sun in the Earth's atmosphere, keeping the planet warm enough to sustain life. They do not scatter and reflect sun rays back into space (option B), nor do they trap harmful substances in the air (option C), and they do not drastically increase Earth's temperature by capturing more sunlight in an extreme sense (option D is an over - exaggeration). The main function is to trap heat for a habitable temperature.

Answer:

A. They trap heat energy from the sun, warming Earth's atmosphere to help sustain life.