Which of the following is an example of a natural source of air pollution?
a. burning coal and natural gas releases carbon dioxide.
b. plowing and harvesting crops releases dust particles.
c. blowing wind creates dust storms that release particles.
d. mining releases gases trapped beneath earth's surface.

50 points! which of the following is an inference? a burning candle is extinguished when it is covered with a jar. the candle burns longer than expected in a jar that has a plant in it. a plant lives longer than expected in a jar that has a burning candle. there is more oxygen in the jar because there is a plant in it.