question: Write a question you would see in a school textbook. OPTIONS:
- immune and excretory
- digestive and respiratory
- nervous and skeletal
- circulatory and integumentary
answer: When a soccer player kicks a ball, which two systems work directly with the muscular system?

question: Write a question you would see in a school textbook. OPTIONS:
- energy than the first.
- inertia than the first.
- power than the first.
- work than the first.
answer: At a weightlifting competition, two competitors lifted the same weight to the same height. The second competitor accomplished the lift 2 seconds faster than the first competitor. This demonstrated that the second competitor had more

question: Write a question you would see in a school textbook. OPTIONS:
- pouring unused chemicals down the sink
- mixing leftover chemicals in one container
- wearing safety goggles when working with chemicals
- returning unused chemicals to the original container
answer:
Which of these is a safe practice in a laboratory investigation when working with chemicals?