What does cyanide do to coral reefs?
Kills coral polyps
Makes reefs colorful
Feeds the fish
Helps coral grow
What were the Great Pyramids made of?
Granite
Limestone
Sandstone
Coral
What is cyanide used for in fishing?
To color the water
To feed fish
To stun fish
To clean reefs
What helps coral reefs grow?
Bright sunlight alone
Storms and waves
Sand and shells
Coral polyps coming together
Where are most coral reefs found?
In cold, deep oceans
In rivers and lakes
In warm, shallow oceans
In aquariums
What happens to reefs during blast fishing?
They get cleaned
They become deeper
They are destroyed by the explosion
They grow faster
What is one way to help coral reefs survive?
Catching more reef fish
Adding chemicals
More blast fishing
Conservation efforts
What do coral polyps leave behind when they die?
Sand
Limestone
Shells
Salt
What does Robert Richmond say about coral reefs?
They are already gone forever
They are not important
They are easy to move
They can come back if given a chance
Why are coral reefs important to humans?
They are fun to swim in
They help build houses
They give us clean air
They provide food like fish
What is blast fishing?
Using bombs to catch fish
Fishing in cold water
Fishing with nets
Using a rod and hook
How old are some coral reefs?
Only 1,000 years
Over 50 million years
A few hundred years
Less than 10 years
What is a reef?
A building made by humans
A structure made by coral polyps
A kind of wave
A type of fish
How did floods hurt the Great Barrier Reef?
They removed fish
They brought dirty water and chemicals
They made the reef sink
They froze the ocean
How much of ocean life lives around coral reefs?
10 percent
25 percent
50 percent
75 percent