I'd draw a car on a hill and explain how you press the gas pedal and gravity helps push the car down the hill, or draw it going up the hill and explain how gravity makes it difficult for the car to make it up the hill.
Near-Ultraviolet, Violet, blue, green, and yellow
D- The digestive system breaks down your food and your circulatory system takes it throughout your body
Fossil Fuels; Once they run out ,humans can not replacing them.