a pig pipe
A circular building is called a round building or a cylindrical building.
The circular bowl at the top of a volcano is called a "crater." It is formed as a result of volcanic activity, such as eruptions or collapse of the volcano's summit. Craters can vary in size and shape depending on the type of volcano.
The biggest reef aquarium in the world is a debatable topic. Where the biggest reef aquarium in the world is located can be in different places depending on different resources. One of the largest reef aquariums is in Osaka, Japan. Another one of the biggest reef aquariums is in Atlanta, George in the United States. Lastly, possibly the biggest reef aquarium is in Australia. This is considered to be the biggest reef aquarium in the world, and it is known as Reef HQ.
Circling around a central point is called orbiting.
Caldera.
A coral atoll.
atoll
no
A tropical lagoon is encircled by an atoll.
An atoll is a ring-shaped coral reef island that encircles a lagoon partially or completely. Atolls are typically found in the Pacific Ocean and are formed from the remnants of volcanic islands that have submerged over time. The circular shape of atolls is a result of coral growth around the rim of a sinking volcanic island.
The Blacktip Reef Shark is called such since it lives in coral reefs and its fins are black at the tip.
An inverse is NOT called a circular function. Only inverse functions that are circular functions are called circular functions for obvious reasons.
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A black tip reef shark is called a black tip reef shark because its fin and tail has black markings on the top.
The circular paths are called orbits.
The great barrier reef, off the coast for northern Australia.
It is called a coral reef.