Which of the following describes the clean coal method of coal washing?
a)treating flue gas to remove sulfur as it leaves a smokestack.

b)using a wet scrubber, then condensing a water-sulfur vapor and storing it underground.

c)charging particles and collecting them on plates.

d)mixing crushed coal with a liquid to remove mineral impurities

If a robot fixed another robot is it a engineer or doctor?

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !

How does the diagram explain ocean currents? earth tilt 23.5 degreesquestion 1 options: earth's tilt causes uneven heating of earth which causes currents.earth's tilt causes the ocean to move because of gravity.earth's tilt and its rotation cause currents.earth's tilt causes uneven distribution of salt which causes currents.