Q: Three-prong plugs, circuit breakers, and gfci outlets are safety features that recognize the danger of what? A:
OPTIONS:
- heat
- magnetism
- gravity
- electricity
electricity

Q: What may be lost when waves travel through matter, but not when they travel through space? A:
OPTIONS:
- matter
- frequency
- threshold
- energy

Answer: energy

Question: Q: What gems are created by mollusks, such as oysters? A:
OPTIONS:
- crystals
- turquoise
- diamonds
- pearls
Answer: pearls

input with options: Q: What moves sediments after they have formed? A:
OPTIONS:
- photosynthesis
- migration
- perspiration
- erosion
output: erosion

Q: Q: Birds actually have two basic types of feathers: flight feathers and? A:

OPTIONS:
- colorful plumes
- landing feathers
- shed feathers
- down feathers

A: down feathers

Q: What is the study of how and why plants and animals live where they do? A:
OPTIONS:
- geomorphology
- heredity
- lithography
- biogeography
biogeography