Question

An atoll is a reef or island indicative of an undersea volcano.
a. True
b. False

Answer 1

Hello!

The statement "An atoll is a reef or island indicative of an undersea volcano is True.

An atoll is a ring-shaped coralline oceanic island or a set of small islands from a coral reef that forms an internal lagoon. When there is a volcanic island, the Coral reef grows around it and the old volcano slowly sinks into the ocean, when the right conditions are met. The most famous atolls are the Bikini, Maldives, and Midway atolls. 

Have a nice day!

Answer 2

ANSWER:

TRUE.

EXPLANATION:

An atoll is a ring-formed coral reef, island, or arrangement of islets. An atoll encompasses a waterway called a tidal pond. At times, atolls and tidal ponds secure a focal island. Channels between islets associate a tidal pond to the vast sea or ocean. Atolls create with submerged volcanoes, called seamounts. To start with, the fountain of liquid magma ejects, heaping up magma on the ocean bottom. As the spring of gushing lava keeps on emitting, the seamount's rise becomes higher, in the long run breaking the surface of the water. The highest point of the well of lava turns into a maritime island.