Q: Answer the question

What may form as a direct result of a star collapsing?
OPTIONS:
- constellation
- galaxy
- protostar
- supernova

A: supernova

Q: Answer the question

A squid is an animal that lives in the ocean. It pumps a stream of water out of its body, causing it to move rapidly. Which of the following mechanical systems moves in a way most similar to the squid?
OPTIONS:
- a bus
- a helicopter
- a rocket
- a train

A: a rocket

Q: Answer the question

What is the major function of the human excretory system?
OPTIONS:
- eliminate waste materials
- respond to stimuli
- break down food mechanically
- absorb nutrients from food

A:
eliminate waste materials