Astudent decided to investigate the composition of the soil in her garden by shaking a small sample in a jar of water. after a few days, most of the material had settled at the bottom, but the water above the soil had a 'cloudy' appearance
interpret information to make judgments about the density of the particles in the liquid layer and the particles in the precipitate at the bottom.
is right answer
melamine is a fire retardant plastic, resist the spread of fire. it is used in the uniform of fireman for the protection of human body form heat hazards. it is also use in airplanes, buses etc. to prevent the spread of fire.