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WorksheetsCoral Reefs
Total questions: 15
Worksheet time: 8mins
What conditions do corals grow under?
Clear Waters
Water with a lot of nutrients
Water ranging from 20° Celsius to 32° Celsius
Sunlight
What are the global consequences? (Select all that apply)
economic
social
health
political
4.What do coral reefs provide ? Select all that apply.
habitat for the fish we eat
coastal protection during severe weather
compound for the medicine we take
barrier against pollution
6.Corals prefer clear shallow waters because they need sunlight to grow.
True
False
A "habitat" is a place where _____. (line 11)
people fish
animals or plants naturally live
animals or plants are few
Coral reefs help protect coasts by _____.
absorbing pollution
releasing important chemicals
slowing down waves
7.Where can you find coral reefs around the world?
warmer water near the equator
cooler climate near the poles
Moderate climates
Arctic climate
________ of different plants and animals live on a single reef.
3.Symbiosis happens when the two different organisms live together and interact in some way.
True
False
Sharks are a common animal that live in coral reefs.
True
False
Coral reefs are referred to as "underwater forests."
True
False
The helpful algae give coral their _____.
colour
hardness
size
How are coral reefs formed?
when fringing reefs are formed
when free-swimming coral larvae attach to submerged rocks
when limestone start to produce calcium carbonate
when the chicken lays eggs
About _____ percent of the world's coral reefs have died.
20
50
80
Coral are animals.
True
False
