The solar system includes the sun and all celestial bodies that orbit the sub. Each planet in the solar system has unique characteristics.
The sun in one of many stars that exist in the universe.
Most of the cycles and patterns of motion between the Earth and sun and predictable.
Light and sound are forms of energy that behave in predictable ways.
Organisms perform a variety of roles in an ecosystem.
All of the processes that take place within organisms require energy.