Coral reefs are found only in warm shallow water. These reefs are made up of tiny groups of animals called coral. When corals die, they leave behind hard skeletons that build up and form reefs. As new corals grow on top, the reefs grow bigger and bigger.The coral can be hard or so...
There are also creatures great and small, from whale to plankton, that make-up the ecosystem. An important part of this ecosystem is coral and coral reefs. Answer and Explanation: Reefs are made up of skeletons of coral which also live on the reef. There are many species of coral. ...
The corals that form reefs aren’t rocks or plants. Corals are made up of groups of tiny animals called polyps (PAH-lips). Most polyps are smaller than a pea. Thousands of polyps can live on a piece of coral. Where Do Corals Live? Coral reefs need certain living conditions to stay he...
Corals are found all over the world's oceans, from the Aleutian Islands off the coast of Alaska to the warm tropical waters of the Caribbean Sea. The biggest coral reefs are found in the clear, shallow waters of the tropics and subtropics. The largest of these coral reef systems, theGreat...
Coral reefs are underwater structures that act as an aquatic ecosystem and help protect coastal areas from erosion. Discover facts about coral...
What are coral reefs? A. Home to only a few species of fish. B. Ugly and not diverse. C. One of the most beautiful and diverse parts of the marine ecosystem. D. Not important for the E. cosystem. 相关知识点: 试题来源: 解析 C。解析:“Coral reefs are one of the most beautiful...
What are coral reefs made out of? Coral Reefs: Coral reefs are one of the busiest underwater ecosystems. Many fish come to the coral reefs to feed and many people go diving at coral reefs for the views. And scientists are continually studying them. ...
What exactly is coral reef? Coral reefs aremade up of colonies of hundreds to thousands of tiny individual corals, called polyps. These marine invertebrate animals have hard exoskeletons made of calcium carbonate, and are sessile, meaning permanently fixed in one place. ...
题目What are coral reefs? A. Just beautiful things. B. Only important for coastlines. C. Beautiful and extremely important. D. Useless for the planet. 相关知识点: 试题来源: 解析 C。解析:文章中提到珊瑚礁不仅美丽而且极其重要,它们为无数物种提供栖息地并保护海岸线免受侵蚀。
A coral reef is a highly productive and dynamic ecosystem. Like a tropical rainforest, they are made up of and provide support for a large portion of the world's biodiversity although they are primarily characterized by reef-building corals....