All objects and substances in the natural world are composed of matter.
Matter exists in different states, each of which has different properties.
Heat, electrical energy, light, sound and magnetic energy are forms of energy.
Offspring resemble their parents and each other.
Individuals of the same kind differ in their traits and sometimes the differences give individuals an advantage in surviving and reproducing.
Plants and animals have life cycles that are part of their adaptations for survival in their natural environments.