Which islands of India is made up of Coral reef?

In India, major coral reef ecosystems are seen in Gulf of Mannar, Gulf of Kachchh, Andaman & Nicobar, and Lakshadweep Islands, which embrace all the three major reef types (atoll, fringing, and barrier) and include diverse and extensive reef areas of the Indian Ocean (Figure 1).

Explanation:

Explanation:

The major reef formations in India are restricted to the Gulf of Mannar, Palk bay, Gulf of Kutch, Andaman and Nicobar Islands and the Lakshadweep islands. While the Lakshadweep reefs are atolls, the others are all fringing reefs. Patchy coral is present in the inter-tidal areas of the central west coast of the country.

c. seafloor spreading occurs.

d. crust becomes molten rock.

e. denser plates slide under lighter plates.