Coral reefs and Mangrove swamps

To grow, coral reefs need...

• Warm water between 23 to 25 degrees

• Hot water between 25 to 30 degrees

• Tepid water between 15 to 20 degrees

Coral has a solid...

• Skeleton of calcium

• Skeleton of limestone

• Skeleton of gummy bears

Coral reefs are usually found...?

• Along the Equator

• In seas between 40 degrees north and south of the equator

• In tropical and subtropical seas between 30 degrees north and south of the equator

Choose all correct answers

• Coral reefs hate freshwater

• Coral reefs hate silty water

• Coral reefs hate water high in nutrients

• Coral reefs hate mangroves

The preferred depth of water for a coral reef is

• More than 70m less than 100m

• more than 50m less than 70m

• Less than 50m

• Less than 100

Coral reefs need plenty of ____________to grow

• sunlight

• nutrients

• algae

• fishies

A fringing reef is where...

• Coral grows around an island

• Coral platforms grow out of the sea attached to the mainland

• Coral grows away from mainland in shallow water

Mangrove swamps love

• Huge temperature variations

• Fresh water

• choppy (rough) seas

• Sheltered tropical coasts

Mangrove swamps can be found

• Only along the equator

• between 32 degrees north and 38 degrees south of the equator

• between 40 degrees north and south of the equator

• Only along the arctic and antarctic circles

Mangroves are halophytes, which mean that they...

• Need to live in fresh water

• Need to live in salty water