If the vanes rotating in an electric fan causes wind, then the vanes rotating in an electric fan causes? Answer choices: - sound - heat - wind - current - motion - speed - Lift - vibration
wind

If coal is used for generating heat and can explode, then coal is used for generating heat and can what? Answer choices: - melt - explode - run - kill - heat - energy - stay warm - freeze
explode

Q: If agreenhouse protects plants from death, then what does a greenhouse protect plants from? Answer choices: - Injury - Winter - math - disease - death - sound - wind - science
A: death

Question: If complex social behaviors can be seen in insects whose interactions last more than a one year, then complex social behaviors can be seen in insects living how? Answer choices: - in flowers - huddle together - more than one year together - By wind and rain - it helps plants in growing - nocturally - individually - sub-units of species
Answer: more than one year together

*Question*
If threatening behavior causes stress in animals, then what does threatening behavior cause in animals? Answer choices: - negative - stress - dog - knife - disease - Movement - influenza - h2o
**Answer**
stress

Q: If bundles of fibers contraction occurs when bundles of fibers get shorter, then what contracts as it gets shorter? Answer choices: - layers of fat - Epidermis - Veins and arteries. - Shortstop - Labor - Contracts - the body's largest organ - Bundles of fibers
A: Bundles of fibers