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Discover the symbiotic relationship that helps this angler fish find his next meal!

Young readers will love biting into this passage's cool piranha facts, and they'll get a nice reading comprehension workout in the process.

Grandma and grandpa didn't always have gray hair. Find out about what gives our hair color and what makes our hair lose that color as we get older.

All living things go through many changes as they grow to be adults! Help your little one understand how he will grow and change.

Young readers will love digging into this passage's cool weedy sea dragon facts, and they'll get a nice reading comprehension workout in the process.

Find out how scientists explain our yawns and use the graph to keep track of your family's yawns for a whole day!

Do you need a job? Well, this elephant is looking for a new symbiotic partner, and you could be just the candidate he's looking for!

Young readers will love digging into this passage's cool shrimp facts, and they'll get a nice reading comprehension workout in the process.

Step up to the controls, Dr. Frankenstein -- the world is in need of a new creature!

The olm is a blind salamander that lives in Europe. Kids will learn how pictures help illustrate concepts with this life science worksheet.