input: OPTIONS:
- sound pollution
- Greenhouse gases
- Pesticides
- water
- fossil fuels
- Air pollution
- animal diversity
- steroids Now, answer this question: You are presented with the quiz "What causes an animal population to decrease?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "harming an animal species causes that animal 's population to decrease" and "air pollution also harms plants and animals". So, what's the best answer to the question?
A:
output: Air pollution
You are presented with the quiz "Warm air advancing on what causes cloudy and rainy weather?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "awarm front causes cloudy and rainy weather" and "if warm air is advancing on cold air, the front is designated a warm front". So, what's the best answer to the question?

OPTIONS:
- streams.
- streams
- Movement
- flooding
- coastlines
- rivers
- rainfall
- cold air

Answer: cold air
Problem: OPTIONS:
- being distracted
- chemical reaction
- Electrical energy
- cigarettes
- smoking cigarettes
- deoxyribonucleic acid
- Allergies
- harmful substances
Q: You are presented with the quiz "What can cause the leading cause of death for children?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "being distracted while driving can cause people to crash their car" and "car crashes are the leading cause of death for children from birth to age 21". So, what's the best answer to the question?
Answer: being distracted
Problem:OPTIONS:
- hair
- bushes
- keratin
- food
- shells
- appendages
- energy
- sponges

You are presented with the quiz "What can animals use for protection?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "shelter is used for protection by animals against weather" and "many animals use sponges for shelter". So, what's the best answer to the question?
****
A: sponges
You are presented with the quiz "What is formed by erosion processing large rocks?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "soil is formed by weathering" and "over time, the slow processes of weathering and erosion can turn large rocks into sand". So, what's the best answer to the question?
OPTIONS:
- cracks
- crust
- Newton
- roots
- pan
- soil
- potash
- biome
soil
You are presented with the quiz "What can communicate with sounds?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "animals can communicate with sounds, chemicals, or visual cues" and "bats and owls are nocturnal animals". So, what's the best answer to the question?
OPTIONS:
- the Sun
- sheep
- rocks
- bears
- Birds
- air molecules
- phone
- bats

Answer:
bats