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Scientists have long debated the relationship between birds and reptiles. After all, there are some physical similarities between the species, from the eggs they both lay to the scales that can be found on their bodies. But what about the differences? Birds have feathers and are warm-blooded. Reptiles slither, crawl, and creep and are cold-blooded. Scientists study these similarities and differences by observing and experimenting, and now you can too. Whether you try the experiments and activities in this book for fun or for a science fair project, you’ll get an up-close and personal view of these two incredible types of animals. Are they related? You be the judge!
Scientists have long debated the relationship between birds and reptiles. After all, there are some physical similarities between the species, from the eggs the
From ancient times, people have wanted to learn about the sky. The stars, planets, and other heavenly bodies have been observed for centuries, and theories have
What do sponges, worms, and mollusks have in common? They’re all simple animals. They are also unique, cool, slimy, fun, and (sometimes) creepy! There are hun
What do CDs, lamps, lasers, and microwave ovens all have in common? They all use the power of light and optics! From ancient times when scientists puzzled over
Babies crying, school bells ringing, cars roaring by, the ding signaling that a new text message has arrived . . . sounds are all around us, but how are they ma