Coral reefs _____ a small 25% of ocean life.
swim
lose
occupy
construct
Coral reefs are _____ when people take coral from the reef to make things.
helped
built up
protected
damaged
The greatest limestone structures are _____.
churches
castles
coral reefs
pyramids
Coral reefs are like colorful underwater ______ where many different animals and plants live.
clouds
games
cities
holes
If we take care of reefs, they can _____ or come back.
die
break
tear down
rebuild
Coral reefs need our help to stay healthy, so we should be kind to the ocean and ______ trash into it.
sometimes throw
always throw
not throw
_________ means taking care of nature, like coral reefs, so they stay healthy and happy.
Aquariums
Pollution
Construction
Conservation
Global warming has caused many reefs to become ____.
bigger
sick
healthy
better
Coral reefs are ______ because they have bright and brilliant colors.
the same
remarkable
boring
Some fishing methods have ____ effects on reefs.
negative
hungry
friendly
illegal
The coral reefs' _____ colors come from the corals
brilliant
dull
dark
white
Limestone was used to construct ________;
The Great Wall of China
my house
The Great Pyramids of Egypt
The Statue of Liberty
A tank or building where sea animals are kept is an ____.
library
aquarium
courthouse
museum
Most coral reefs are found in warm, shallow ______.
pools
bathtubs
oceans
lakes
1,000,000,000,000 =
a billion
a million
a google
a trillion
Many different animals ____ coral reefs.
occupy
kill
forget
leave
Coral reefs like to live in _____ waters, which means they are not too deep.
dirty
deep
shallow
polluted
Cyanide fishing releases liquid cyanide, a deadly _____, into the reef.
chemical
robot
hook
fishing pole
Reefs are built by _____, tiny, soft-bodied animals related to jeyllyfish.
sea horses
starfish
fish
coral polyps
When coral polyps die, they leave behind a material called ______.
clay
limestone
marble
brick