Observations of organisms include
descriptions of why the organism has certain traits.
descriptions of the number, size, and arrangement of parts of the organism.
conclusions made about the characteristics of an organism.
conclusions made based on an organism’s dna.

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