Q: You are presented with the quiz "What does Lake Tahoe originate from?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "lakes are formed by precipitation and runoff" and "for example, Lake Tahoe is a huge lake originating from mountain stream runoff". So, what's the best answer to the question?

OPTIONS:
- hydrogen and oxygen
- It's manmade
- An ocean
- tectonic plates coliding
- A hurricane
- A mountain stream
- Water expanding
- body water

A: A mountain stream
input: OPTIONS:
- Eat food through the mouth
- converting mass to energy
- Remove waste from the body
- Walk on two legs
- eat plants or other animal
- by keeping them warm
- produce offspring
- Hatch from eggs Now, answer this question: You are presented with the quiz "What is one thing all organisms do?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "excretion is the process of removing wastes and excess water from the body" and "all organisms excrete wastes". So, what's the best answer to the question?
A:
output: Remove waste from the body
You are presented with the quiz "Reptiles have what for protection?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "scales are used for protection by scaled animals" and "generally, reptiles are thought of as being land dwelling animals with scales". So, what's the best answer to the question?

OPTIONS:
- shells
- cartilage
- the skin
- hair
- fur
- scales
- keratin
- beaks

Answer: scales
Problem: OPTIONS:
- sunlight
- evaporative cooling
- gases
- Physical weathering
- water evaporation
- lower temperature thresholds
- exposure to cold
- fissures of hot, acidic water
Q: You are presented with the quiz "what causes a solid to form?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "freezing causes a solid to form" and "lower temperature thresholds are at freezing". So, what's the best answer to the question?
Answer: lower temperature thresholds
Problem:OPTIONS:
- heat
- nicotine
- liquid
- water
- glycogen
- ice
- fire
- a prism

You are presented with the quiz "What can form from vapor?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "condensing causes a liquid to form" and "vapors are cooled and condensed into liquid". So, what's the best answer to the question?
****
A: liquid
Problem:OPTIONS:
- leeches
- earthworms
- snails
- plants
- tapeworms
- trees
- potatoes
- bushes

You are presented with the quiz "What are a major food source to organisms including humans?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "mollusks are a major food source for other organisms, including humans" and "mollusks in the diorama include snails and clams". So, what's the best answer to the question?
****
A:
snails