Reptile answer option no 1
Answer:
They contain protein fibres that can contract when energy is available, making the cells shorter.
Answer:
Because some people are fat and want to lose that fat away.
Explanation:
A testable question is a question that can be answered and solved by creating and conducting an experiment. Testable questions are often about changing one item to see what impact it has on another.
Example:
Does changing the height of the ramp affect the speed of the skateboard going down the ramp?
