Primary 4 Unit 6 Reading

Scientists believe that many of the world's coral reefs will disappear by the year 2050.

Polyps in warm zones get some of their food from algae.

Polyps have bones.

Coral reefs are only important for tourism.

Polyps in dark zones have to work harder to find food.

Coral reefs are not in danger.

Coral reefs are home to thousands of different organisms.

All polyps live in warm, sunlight zones.

Polyps use their tentacles to catch food.

Polyps are the tiny creatures that make up coral reefs.

Coral reefs are made up of tiny creatures called plankton.

Corals are plants.