A substance that is made up of one or more of the same kind of atom chemically combined

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

Why does asexual reproduction result in offspring with identicle genetic variation

What term describes technology that operates on an atomic level