5. Why does a microscope slide need to be transparent?
so light can pass through the slide to the objective
so light can partially refract from the slide
so light can spread out evenly along the slide
so light can reflect back onto the light source

Abeaker of water was heated and then placed on a bench in the laboratory. the water cooled until it was the same temperature as the air in the laboratory. which of these explains the mechanism by which the water cooled? a. heat energy was transferred from the water to the air. b. water molecules from the water formed warm water currents. c. the water molecules absorbed energy from the molecules in the air. d. the water released radiation until it contained no heat energy.