OD2_Oxford Discover 2_Review U1-U4

Which picture is the person talking about?

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Answer explanation

Water mammals live in water. Sharks, dolphins, whales and orcas are water mammals.

Which picture is the person talking about?

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Answer explanation

Amphibians have gills when they are young and the gills help them breathe in water.

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Answer explanation

Amphibians have wet skin, so they can live in wet places.

Which picture is the person talking about?

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Answer explanation

Birds have feathers and wings to help them warm in winter. Wings help them fly.

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Answer explanation

Birds lay hard eggs in nests. Fish and amphibians lay soft eggs in water. Mammals don't lay eggs. They give birth to live young.

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Answer explanation

Hippopotamuses, giraffes, cheetahs, elephants and rabbits are land mammals. Mammals don't lay eggs. Babies mammals drink milk from their mothers.

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Answer explanation

Fish have scales, fins and a tail to swim in water. Scales cover their bodies to help them keep safe from dangerous fish.

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Answer explanation

Gills help fish breathe in water.

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Answer explanation

Lots of mammals have hair or fur on their bodies and this hair or fur helps keep them warm.

move slowly and quietly

• creep

• hunt

• fight

• squawk