Q: What are named for their "spiny skin"? A:
OPTIONS:
- arachnids
- reptiles
- amphibians
- echinoderms

Answer: echinoderms

Q: What do scientists use to search other planets suitable for living? A:
OPTIONS:
- optics
- lasers
- microscopes
- telescopes

Answer: telescopes

Q: A visual "copy" of an object that is formed by reflected or refracted light is called what? A:
OPTIONS:
- mirror
- instance
- photo
- image

Answer:
image