Question

Which is the part of the coral that is built up over thousands of years into a reef.

Answer 1

Coral reefs are composed of colonies of hundreds to thousands of individual corals known as polyps. These Marine invertebrates have hard exoskeletons made of calcium carbonate and are sessile, which means they are permanently fixed in one location.

Coral reef ecosystems are basically among the most diverse as well as valued ecosystems on the planet. Coral reefs have the most species per unit area of any marine environment.

The reef is built on a skeleton made of calcium carbonate by coral polyps. Slowly, over hundreds or thousands of years, coral polyps add layers of limestone to their skeletons and grow outwards and upwards, expanding the reefs.

Answer 2

The part of the coral that is built up over thousands of years into a reef is the coral skeleton..........................

Step-by-step explanation:

The part of the coral that is built up over thousands of years into a reef is the coral skeleton. Coral reefs are structures that are formed by the accumulation of coral skeletons over time.

Coral reefs are some of the most diverse and important ecosystems on Earth. They provide habitat for a wide variety of marine life, including fish, invertebrates, and algae, and they also provide important economic and ecological services, such as coastal protection and tourism.

Coral reefs are formed by a process known as calcification, in which coral polyps extract calcium and other minerals from seawater and use them to build a hard, porous skeleton. Over time, the skeletons of many coral polyps accumulate and form a reef.

The coral skeleton is a complex and dynamic structure that is constantly being built up and broken down by the activities of coral polyps and other organisms. It is an important component of coral reefs and plays a critical role in their formation and maintenance.