Question: You are presented with the quiz "What causes weathering when interacting with wind?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "rocks interacting with wind over long periods of time causes weathering" and "limestone is the rock formed by calcite".   So, what's the best answer to the question?
OPTIONS:
- technology
- soils
- graptolites
- loose soil
- erosion
- limestone
- plants
- apes
Answer: limestone

Question: You are presented with the quiz "what has permeable skin that easily absorbs substances from the environment?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "amphibians have permeable skin that easily absorbs substances from the environment" and "all frogs are amphibians".   So, what's the best answer to the question?
OPTIONS:
- ferns
- a fish
- humans
- animals
- scales
- bats
- skin cells
- frogs
Answer: frogs

Question: You are presented with the quiz "What gives rise to offspring?"   But you don't know the answer, so you turn to your teacher to ask for hints. He says that "reproduction is the process by which living things give rise to offspring" and "physiologically, sex is for the purpose of reproduction".   So, what's the best answer to the question?
OPTIONS:
- sex
- spring
- bird
- DNA
- ova
- production
- factories
- ovum
Answer:
sex