Question

when the combustion - engine was invented it had many positive effects on society, but years later it has been discovered that the burning of oil and coal has one major negative effect on the environment. what is that negative effect? a it improves air quality. b it uses renewable resources. c it causes a hole in the ozone. d it increases the greenhouse effect.

Explanation:

Burning oil and coal releases greenhouse - gases like carbon dioxide. These gases trap heat in the Earth's atmosphere, increasing the greenhouse effect. Option A is incorrect as it degrades air quality. Option B is wrong since oil and coal are non - renewable. Option C is mainly caused by chlorofluorocarbons (CFCs), not by burning oil and coal directly.

Answer:

D. It increases the greenhouse effect.