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Scientists predict that _____.
 
we will have only 10% of corals existing in 2050.
 
only 10% of coral will exist in 2030.
 
we will lose another 10% of corals in 2050.
Colonies are ______.
 
huge groups of coral living together
 
huge groups of polyps
 
corals living for many years
Polyps that live in cold, dark zones have to work harder _____.
 
because there is no algae here.
 
because they can’t see clearly.
 
because algae here move fast.
Algae are _____.
 
tiny plants and food for polyps
 
fish
 
polyps
Polyps have _________ bodies without bones.
 
soft and transparent
 
hard and transparent
 
rough and transparent
It's predicted that only ten per cent of the world's coral will exist in the year 2050.
 
True
 
False
Scientists use reef creatures to make new foods and drinks.
 
False
 
True
Some coral reefs are millions of years old.
 
True
 
False
Polyps in the dark zone get food from tiny plants called algae.
 
False
 
True
Polyps in the sunlight zone have to use their tentacles to catch tiny creatures called plankton in the water.
 
False
 
True
A coral reef looks like a colorful underwater garden, but corals are not plants.
 
True
 
False