Which of the following statements is NOT true? The corn that we grow today has not changed since prehistoric times. Early humans planted seeds from corn plants with large kernels. It took many generations for corn plants to change. Humans have selectively bred many different types of crops.

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.