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