The female frog lays several thousand eggs in the water. The eggs hatch into tadpoles, which do not look like frogs at all. They have big heads and long tails. They have gills to breathe under water. As a tadpole grows, its tail becomes smaller and disappears and legs appear. The
tadpole develops lungs so it can breathe out of water. The tadpole is now a young frog. It can live on land or in water.
What is the main idea of the paragraph?
1. Frogs lay eggs by the thousands.
2. A tadpole grows into a frog.
O 3. A tadpole lives on land and in water,
4. Tadpoles have big heads and long tails.