Being an astronaut is a cool job, but before you sign up you should know life in space isn’t all fun and games. The lack of gravity can make our bodies act in strange ways.
When you visit a pond or the beach, you might see fish, frogs, crabs, insects, seaweed, or lily pads. Don’t let your eyes fool you, though… there’s a hidden world in water full of creatures too small to be seen!
If birds evolved from dinosaurs, would that make them reptiles too?
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