People are developing electric cars that would replace gasoline-burning cars. One major advantage of the electric car is that it OPTIONS:
- accelerates faster.
- causes less pollution.
- gives a smoother ride.
- needs no battery.
A: causes less pollution.

One example of matter is OPTIONS:
- sound
- light
- heat
- water
A: water

Which two body systems work together to transport oxygen to the cells? OPTIONS:
- skeletal and respiratory
- digestive and respiratory
- respiratory and circulatory
- respiratory and reproductive
A: respiratory and circulatory

Which of the following is an example of an assistive device? OPTIONS:
- contact lens
- motorcycle
- raincoat
- coffee pot
A:
contact lens