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