What is a similarity between a fish embryo and a human embryo in the late stages of development? They both have tails
They both have gills.
They both have spines.
They both have arms.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line