Q: If living things all require food, then what do living things require? Answer choices: - blood - water - lipids - health - oxygen - food - cells - Sun
A: food

Q: If acamera needs a mirror to help redirect light, then what redirects light in a camera? Answer choices: - cactuses - microscope - photons - electricity - The shutter - A mirror - A photo - The film
A: A mirror

Q: If weathering of rocks is caused by water, then what causes rocks to weather? Answer choices: - seasons - force - erosion - storms - water - heat - lightning - gas
A: water

Q: If viruses are so small that they can be seen only with a device developed in germany, then viruses are so small that they can be seen only with a device developed where? Answer choices: - A computer - sunlight - Light - germany - retina - at home - canada - taiwan
A: germany