Fact 1: Awindmill converts wind energy into electricity primarily by using mechanical energy. Fact 2: Mechanical energy is the energy of moving objects. Given the two facts above, answer the question "what does a windmill primarily use to convert wind energy into electricty?" with the following options: - matter vibrating - stored energy - solar power - batteries - Movement of an air mass - heat is produced - energy of moving objects - Something to move
energy of moving objects

Fact 1: Threatening behavior by predators causes a porcupine to extend its quills. Fact 2: Puffers are smooth skinned while Porcupines have the characteristic spines or quills. Given the two facts above, answer the question "What does a porcupine do with its spines when it's threatened?" with the following options: - killing insects - Shoot them - kill them - protect them - Extend them - Shed them - Retract them - behave
Extend them

Q: Fact 1: Dehydrating food is used for preserving food. Fact 2: Food is then dehydrated in slow oven or dehydrator. Given the two facts above, answer the question "Slow cooking food in an oven will cause it to be what?" with the following options: - staying warm - kinetic - dangerous - dry and hot - preserved - dormant state - reduced heat - hydration
A: preserved

Question: Fact 1: If an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity. Fact 2: Specific gravity is related to density. Given the two facts above, answer the question "This determines whether an object will sink or float:" with the following options: - density - displacement - energy - sun's heat - phase - heat - swim - forces
Answer: density

*Question*
Fact 1: Some parasites kill their host, but most do not. Fact 2: All parasites are harmful to their host, but some are beneficial to humans. Given the two facts above, answer the question "Some what are beneficial to humans?" with the following options: - fungi - parasites - roots - humans suffering - natural disasters - honeybees - poisons - orchids
**Answer**
parasites

Q: Fact 1: Burning wood is used to produce heat. Fact 2: Interior woods are birch, spruce and pine. Given the two facts above, answer the question "What is burned to produce heat?" with the following options: - Oak - Gold - Spruce - cellulose - Conifers - bamboo - Plastic - Aluminum
A: Spruce