the great barrier consists of thousands of small:
a. continental islands
b. lichen reefs
c. coral reefs
d. volcanic reefs
my answer is c
Right.
Yes, the Great Barrier Reef is coral.
To find the correct answer, let's break down the information provided in the question. The question is asking about the composition of the Great Barrier Reef, specifically whether it consists of continental islands, lichen reefs, coral reefs, or volcanic reefs.
To determine the answer, we need to understand what the Great Barrier Reef is. The Great Barrier Reef is the world's largest coral reef system located off the coast of Australia. It stretches over 2,300 kilometers (1,400 miles), making it visible from space.
Now, let's compare the options given:
a. Continental islands: These are land masses that are separate from the mainland but remain connected to it. The Great Barrier Reef is not made up of continental islands, as it is primarily an underwater structure.
b. Lichen reefs: Lichens are composite organisms consisting of a fungus and an alga. However, lichen reefs are not a recognized component of the Great Barrier Reef.
c. Coral reefs: Coral reefs are underwater structures made up of the accumulated skeletons of coral polyps. These reefs are known for their diversity and are the primary composition of the Great Barrier Reef. This option seems to be the correct answer.
d. Volcanic reefs: Volcanic reefs are formed by volcanic activity and are not typically associated with the Great Barrier Reef system.
Based on the given options and the knowledge of the Great Barrier Reef, the correct answer is c. coral reefs.