input: OPTIONS:
- sunny days
- body heat
- body water
- heat energy
- contained areas
- electricity
- fever sweats
- power Now, answer this question: You are presented with the quiz "insulated material can be used to prevent wasting a lot of what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "insulated material can be used for keeping warm" and "birds waste a lot of body heat trying to keep warm in exposed areas". So, what's the best answer to the question?
A:
output: body heat
You are presented with the quiz "What causes frostbite of tissue?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "hydrogen bonds cause water to expand when it freezes" and "frostbite is the actual freezing of tissue". So, what's the best answer to the question?

OPTIONS:
- an object
- hydrogen bonds
- heating liquids
- Veins and arteries.
- Generating heat
- evaporation
- heat produced
- dehydration

Answer: hydrogen bonds
Problem: OPTIONS:
- energy
- snowballs
- glaciers
- wind
- Sun
- blizzards
- coal
- fire
Q: You are presented with the quiz "what causes thermal expansion?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "increasing heat causes thermal expansion" and "fire makes heat". So, what's the best answer to the question?
Answer: fire
Problem:OPTIONS:
- shrub beds
- solid geometric shapes
- saffron
- Organic compounds
- turmeric
- mustard seed
- cinnamon sticks
- layers of fat

You are presented with the quiz "What are sometimes made from the material that covers woody stems?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "trees have woody stems covered with bark" and "cinnamon sticks are simply pieces of tree bark". So, what's the best answer to the question?
****
A: cinnamon sticks
You are presented with the quiz "what are cells the microscopic building blocks of?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "cells are the microscopic building blocks of organisms" and "plants are complex organisms". So, what's the best answer to the question?
OPTIONS:
- gravity
- animals
- density
- trees
- a fish
- plants
- weathering
- bacteria
plants
You are presented with the quiz "What must a chemical reaction overcome before starting?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "all chemical reactions require activation energy to get started" and "activation energy is required to overcome the energy barrier". So, what's the best answer to the question?
OPTIONS:
- PV=nRT
- heat or cold
- reactants
- energy barrier
- Dehydration
- harmful substances
- resistance
- temperature

Answer:
energy barrier