Which would indicate the water in a lake is not safe for drinking? A. many varieties of fish in the lake B. high dissolved oxygen levels in the lake C. cold water temperature of the lake D. high turbidity levels in the lake​

what is the question?

reflection is the bouncing back of a propagating wave when it encounters a barrier; usually shows an image of the source of light wave

1) bounces back from an opaque material

2) bounces back from the boundary

3) seen in mirrors

refraction is the bending of a propagating wave having a shift of direction as it passes through different media; usually seen in lenses to magnify or lessen

1) passes through a prism

2) moves from one medium to another

3) seen in lenses