Some animals look totally different to their adult when they are born and must go through many __________ to finally look like the grown-up animals.

Fish live in water. They have ________ instead of legs and _______ instead of lungs.

Although most fish lay eggs, some sharks give birth to _________.

Dolphins and whales live in water and have fins and a tail. They breathe air through a ____________. They have to come to the surface to do this.

These birds, reptiles and mammals have offspring that look like their adult when they're born, but ______________ don’t.

Insects have 6 legs. Their bodies are _________ 3 parts.

__________ are baby animals.

Animals, and all living things, do certain things to stay alive. These are called ____________.

Mammals usually have hair or fur. ____________ are born alive.

Some animal lay eggs which ______ into offspring.

All sharks belong to the fish group because they ___________ through gills.

Echidnas and platypus are found in countries such as New Zealand and Australia. They are ________ but they lay eggs rather than giving birth to live young.