Page 67 - Benchmark-2.2

Caves

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What are three types of caves?

There are lava caves, sea caves, and

ice caves. / Three types of caves are

lava caves, sea caves, and ice caves.

Water forms holes beneath the ground.

Over time, the holes become bigger.

Then, the water runs out. A large hole

is left in the ground. It is a cave!

Unit 3 | Caves