Birds build nests in trees.
A nest is a soft, cozy cup.
Eggs stay safe inside.
Mice and rabbits dig burrows.
A burrow is a tunnel in the ground.
It keeps them warm and hidden.
Fish live in water homes.
Some fish hide in seaweed.
Other fish hide in coral reefs.
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Volcanoes grow where tectonic plates collide or drift apart. Heat melts rock into light, buoyant magma that rises, cools, and hardens near the surface, building the cone layer by layer.
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