where are most coral reefs found?

Question

A. north of the worlds rain forest

b. close to most of the worlds rain forests

c. clusterd together in the north

d. in rings around each of the contines

Answer 1

Corals are marine animals of the class Anthozoa, which also includes the sea anemones (order Actiniaria).

Corals are gastrovascular marine cnidarians (phylum Cnidaria) and exist as small sea anemone-like polyps, typically in colonies of many individuals. The group includes the important reef builders known as hermatypic corals, found in tropical oceans, and belonging to the subclass Zoantharia of order Scleractinia. The latter are also known as stony corals since the living tissue thinly covers a skeleton composed of calcium carbonate. A coral "head" is formed of thousands of individual polyps, each polyp only a few millimeters in diameter. The colony of polyps function as a single organism by sharing nutrients via a well-developed gastrovascular network. Genetically, the polyps are clones, each having exactly the same genome. Each polyp generation grows on the skeletal remains of previous generations, forming a structure that has a shape characteristic of the species, but also subject to environmental influences.

Although sea anemones can catch fish and other prey items and corals can catch plankton, these animals obtain much of their nutrients from symbiotic unicellular dinoflagellates (type of photosynthetic algae) called zooxanthellae. Consequently, most corals are dependent upon sunlight and for that reason are usually found not far beneath the surface, although in clear waters corals can grow at depths of up to 60 m (200 ft). Other corals, notably the cold-water genus Lophelia, do not have associated algae, and can live in much deeper water, with recent finds as deep as 3000 m.[1] Corals breed by spawning, with many corals of the same species in a region releasing gametes simultaneously over a period of one to several nights around a full moon.

Corals are major contributors to the physical structure of coral reefs that develop only in tropical and subtropical waters. Some corals exist in cold waters, such as off the coast of Norway (north to at least 69° 14.24' N) and the Darwin Mounds off western Scotland. The most extensive development of extant coral reef is the Great Barrier Reef off the coast of Queensland, Australia. Indonesia is home to 581 of the world's 793 known coral reef-building coral species.

Answer 2

None of the above. Coral carbonate reefs can form in any marine environment higher than about 5000m depth (CCD). They are not linked to rain forests, countries or hemispheres. Most well known reefs are located in shallow tropical warm waters where good light and low nutrient are prevalent (Great Barrier Reef Australia) and some are located around sea mounts (Lord Howe Island).

Answer 3

1. Are coral reefs found in oceans or lakes? Answer: Oceans (Ridge or hummock formed in shallow ocean areas from the external skeletons of corals.) 2. What type of tree would you find in a coniferous forest? Answer: types of 'evergreen' of Pine tree (Pure stands are common and species are relatively few. Trees are evergreen and leaves are needle-shaped, restricting surface area and preventing loss of water by transpiration.) 3. What is the basic of living things called? Answer: Amino acids (Amino acids are the chemical are the building blocks that make up protein. Protein could not exist without the proper combination of amino acids. To understand how vital amino acids are, you must understand how essential amino acids are; you have to understand how essential proteins are to life. It is protein that provides the structure for all living things. Each organism from the largest mammals to the smallest microbe is a compound of proteins.) =========================== I hope this is helpful.

Answer 4

B


but around Australia

Answer 5

coral requires warmth, and relatively shallow water, so I'm goin with D.

Answer 6

e. in shallow tropical waters

Answer 7

sounds weird

Answer 8

I was wondering the same thing myself today