Decomposers are organisms that eat and break down dead plant and animal material. Which organism is a decomposer? OPTIONS:
- algae
- moss
- bacteria
- fish
A: bacteria

Which factor will most likely cause a person to develop a fever? OPTIONS:
- a leg muscle relaxing after exercise
- a bacterial population in the bloodstream
- several viral particles on the skin
- carbohydrates being digested in the stomach
A: a bacterial population in the bloodstream

A student describes a substance as lacking a definite shape. The description also states that the particles of matter are close to each other but still able to flow past each other. Which type of substance is the student most likely describing? OPTIONS:
- solid
- liquid
- mixture
- compound
A: liquid

A mountain range has hills around its edges. How are the mountains and hills alike? OPTIONS:
- Both have grass at the top.
- Both are at least 1000 meters tall.
- Both have liquid rock at their centers.
- Both are taller than the land around them.
A:
Both are taller than the land around them.