Question

2. Name the warm Pacific current that causes coral bleaching-
3. List two economic utilities of coral reefs.
4. What is the alga that gives corals their colour called​

Answer 1

Answer:

1. El Niño is the warm pacific current that causes coral bleaching.

2. Tourism, recreation, and fisheries are the economic utilities of coral reefs.

3. Zooxanthellae is the alga that gives corals their color.

Explanation:

1. El Niño and Coral bleaching:

• When corals are stressed due to heat, they push their helpful algae out of their body, and they turn white and die.
• This coral bleaching is due to two climate patterns, one is short-term and the other is long-term.
• The most important short-term climate pattern is called El Niño, which is the warm pacific current that damages corals. The other is global warming, a long-term effect.

2. Coral reefs help in fish breeding and provides safe nesting grounds for endangered marine turtles.

This gradually promotes tourism and recreation.

3. Most reef-building corals possess photosynthetic algae known as zooxanthellae, that live in their tissues and have a mutual relationship.

Zooxanthellae supply the coral with glucose, glycerol, and amino acids.

In addition to it, they are also responsible for the unique and beautiful colors of many stony corals.

Answer 2

Answer:

El nino is the correct answer as it causes coral bleaching in Pacific Ocean