If you were making observations of someone mixing two substances together, how would you know if a chemical reaction took place?

Which conditions need to be in balance for cells to function? check all that apply. blood sugar food intake body water body temperature body mass

Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.

As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes