Question

Q. Which of the following are the favourable conditions for Coral formations?

Select the correct answer using the code given below:

• A.
  1 and 2 only
• B.
  1, 2 and 3
• C.
  2 and 3 only
• D.
  1 only

Answer 1

The correct option is A

1 and 2 only
Explanation:

Statement 1 is correct: Corals rarely develop in water deeper than 165 feet (50 meters).

Statement 2 is correct: Corals need clear water that lets sunlight through; they don't thrive well when the water is opaque.

Statement 3 is incorrect: Corals need saltwater to survive. This is why corals don't live in areas where rivers drain freshwater into the ocean.