True or false. a change of color is a sign that a chemical reaction is taking place.

The volume of an unknown substance in a sealed glass jar is 50 milliliters. the volume of the jar is 200 milliliters. which state of matter could the substance be?

How do limiting factors most affect population size? ostop population growthrestrict population growthincrease population sizeresult in positive impactso

Which words or phrases identify layers of groundwater? check all that apply. water table kettle lake saturation zone underground lake sinkhole will give brainiest, answer quickly.