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		Does sound travel in space?				Why is fire hot?
		Can there be two chickens in one egg?				Do whales really spit water?
		Are killer whales really mean?				Do fish sleep?
		How does our heart beat without our doing it?				Can my cat see her reflection?
		How do ants walk on the ceiling?				How come a flame can look blue?
		Why do wheels spin so fast when a car moves?				How do they freeze-dry space food?
		How does a blister form? And why is there liquid inside?				How does a compass know where to point?
		How does fire turn into ash?				What are the stars made of?
		Can a voice get loud enough and high enough to break glass?				How does sweat form?
		What are fingernails made of?				Why do mice like cheese?
		If you fall down and get a cut, what causes it to hurt?				What’s the difference between a frog and a toad?
		How many different gases are in the air?				What makes popcorn pop?
		If we have two eyes, why don’t we see double?				Why are computers slow?
		What would happen if you dumped a glass of water in space?				What makes your stomach growl?
		Do insects, sneeze, cough, or hiccup?				What makes you blush?
		Where do fish go in winter?				What causes the ring around the Sun and Moon?
		If heat rises, why is it cold on top of mountains?				Why do tigers have to be so scary?
		What causes chill bumps on your skin?				How high is the Moon?
		What causes sleepwalking?				How do snowflakes form different shapes?
		What causes tides?				How can two trees planted at the same time be different sizes?
		Why do clothes sometimes shrink in the wash?				Why do we get chapped lips?
		Why does dust seem to move along a beam of sunlight in the same direction as the light?				Why do people get an itch?
		Why do cats always land on four legs?				How do we whistle?
		Why don't snakes choke?				Why does cabbage grow above ground but carrots grow below ground?
		Why are windows foggy in the morning?				What colors do color-blind people see?
		What is house dust?				Why does my skin turn colors when I get hurt?
		What causes a seed to grow into a plant?				What makes people float?
		Why do people have moles on their skin?				Why do you feel hot when you get a sunburn?
		Why do we blink?				Why does pepper make me sneeze?
		Why does my hair turn lighter in the sun?				Where do the Sun and Moon go?
		Why do my hands get wrinkly when I take a bath?				Why don’t I feel good after riding a roller coaster?
		Why do fireflies glow?				Why do my hamster’s eyes turn blue at night?
		Why doesn’t it tickle when you tickle yourself, but when someone else tickles you, it tickles?				Where does weight go when you lose it?
		Why do mosquito bites itch?				Why do dogs go around in circles before lying down?
		Why do my fingers turn red under a flashlight?				Why do ice cubes float?
		How is plastic made from petroleum?				How does milk sour?
		Why does crying make your nose run?				Why do you need two holes to pour juice out of a can?
		Why do balloons run out of air?				Do black holes really exist?
		How do scientists know what bones belong to which dinosaurs?				Why do people have eyebrows?
		Why don't animals get cavities?				Is octopus ink poisonous?
		Can a skunk smell the odor it makes?				Why do I have a “lump in my throat” before I cry?
		What makes the Sun and Moon shine?				How does an electric eel make electricity?
		Why does my face turn red when I do a headstand, but my toes don’t turn red when I’m standing up?				What good are wood ticks?
		What causes a shock, and why does it make blue sparks?				How do you make hair gel?
		If you bend your finger back, why does your knuckle crack?				Why do dogs pant when they are not tired?
		Why do bikes fall over when you don’t pedal?				Why do termites eat wood?
		How does dry ice boil water when it's so cold?				Why do onions make people cry?
		When you spin around a lot, how come you get dizzy?				Why can’t I see the salt in the ocean?
		If clouds are made of water, why don't they evaporate?				Why do we dream?
		Since male deer shed their horns, why do you rarely find them?				Why does my skin get darker in the sun, but my shirt fades?
		When I walk and toss a ball, why does the ball stay with me?				Why aren't spiders insects?
		How does your body heal itself?				Why do you hear ocean sounds in seashells?
		How do our brains keep all our memories inside?				Why do trees have bark?
		Why do crickets chirp?				Why does ice stick to cotton?
		Why don’t birds get shocked when they sit on wires?				What makes a sunburn peel?
		What causes waves?				If everybody breathes oxygen, why doesn’t it get used up?
		Why does a person’s hair turn gray with age?				Why do I feel dizzy when I just get out of bed?
		Why does the Sun seem so much brighter than other stars?				Do flying fish really fly?
		If moving particles make heat, how can a fan cool a room?				When pond water evaporates, do the microorganisms evaporate, too?
		Why does your tongue feel strange after you eat pineapple?				Why do falling objects slow down when they hit water?
		How do bees make honey?				When you stop at a stop sign, are you wasting gas?
		Where are your permanent teeth while you still have your baby teeth?				Why does my voice sound so good when I sing in the bathroom?
		How do baby birds breathe inside their eggs?				How does fire get its colors?
		Does your voice sound the same to others as it sounds to you?				How are shooting stars made?
		How do snakes hear?				How do glow-in-the-dark stickers work?
		What causes a person to yawn?				If it’s warm down south, why does the South Pole look so cold?
		Do cats really have nine lives?				Why are there constellations?
		Do you have to be smart to become a scientist?				Why do cats arch their backs and hiss?
		Why does black absorb heat better than other colors do?				Can animals catch cold or get a fever?
		How is stained glass "stained"?				When you open your eyes wide, why do your pupils get smaller?
		How come snow is white?				My dog whines when I play the harmonica. Is she crying or singing?
		What makes waves curl as they reach the shore?				When you cry, the tears are salty. Why?
		Are black and white colors?				My dog eats grass, then throws up. Why?
		As people get older, how come they get wrinkles?				Can porcupines shoot quills at each other?
		How do volcanoes affect the weather?				Why do we need fresh air?
		Does caffeine stunt your growth?				What are diamonds made of?
		My cat can see in the dark. How?				How can it seem like there is water up ahead on the road when there isn't?
		Why do your ears pop when you're in an airplane?				Does food taste the same to animals as it does to me?
		What are chemicals made of?				Why do people have hair?
		Is a newt's skin poisonous?				Why do clouds float, but feathers don't?
		What do fireflies eat?				Why do bubbles form when you drop something in soda?
		What makes people laugh?				How do dogs wag their tails?
		Do fish drink any kind of liquid?				Why can't you see the wind?
		Why are dogs' and cats' noses wet?				If you clap underwater, why can't you hear it?
		Why do rabbits jump instead of running away?				Why do goldfish swallow gravel then spit it out?
		Why do paper cuts hurt so much?				Can my cat and dog communicate?
		Is electricity hot?				Why does aging wood on a house turn black?
		What makes us cough?				Is the platypus a mammal?
		How do “Jack Frost designs” get on windows?				Why can animals stand cold better than people can?
		Why doesn’t water go down your throat unless you want it to?				When my dad strikes a match, why does a flame appear?
		When ice freezes, how do dolphins breathe?				How do our bones keep getting bigger?
		Are there any animals on the earth that man doesn’t know about?				How does the Earth float in space and not fall?
		Do dogs have good eyesight?				Why do pine trees keep their leaves in winter?
		What are inertia and momentum?				How are tapes made for a tape recorder?
		How can a pitcher control a baseball?				How can air blow out small fires, and also make small fires bigger?
		How are coral reefs formed?				How are fossils formed?
		How are rocks made?				Do turtles hibernate in the winter?
		How do light bulbs work?				Does space ever stop?
		How did the planets form?				How do we know the stars are light years away?
		How do you get to be an astronaut?				How do trees give oxygen?
		How does mold grow from bread?				How does a thermometer work?
		How does an airplane work?				How does a camera put pictures on a piece of paper?
		Is poison ivy good for anything?				How does salt melt ice and snow?
		How is a rainbow's shape formed?				How is earwax made?
		What makes hail?				What makes it snow?
		What is soap made of?				What is static electricity?
		What is the difference between an alligator and a crocodile?				What does a Venus flytrap eat?
		What is a blue moon?				What is acid rain?
		What is an aurora?				What causes earthquakes?
		What causes germs?				What causes potholes?
		Why do people's feet fall asleep?				Why does cold pop get warm but hot cocoa get cold?
		Why do we explore space?				Why do we shiver?
		Where does air come from?				Why are yawns contagious?
		Why do camels have humps?

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