Which statement isn't true about polymers?

polymers are complex molecules composed of random sequences of atoms.

polymers are large molecules composed of small monomeric units.

polymes are macromolecules.

the wires in the toaster turning red and the toast crisping and turning brown

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.

her affection for her parents makes her an especially sympathetic character.