Întrebare
cine ma ajuta va rog ::: câteva rinduri în lb engleza despre coral .ce este cu ce se hraneste.. etc..pentru clasa a 4 a..mulțumesc. ..
Întrebare a fost pusă de: USER7767
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Răspuns (135)
Corals are invertebrate marine animals of the Anthozoa class, Cnidaria. Typically, they live in compact colonies made up of a lot of polyps. Polyps are joined together by calcareous channels. After their death, another one is added to the old calcareous skeleton. That's how coral reefs form. The buco-anal opening of each individual is surrounded by 8 tentacles. The limestone skeleton, named in Romanian, is a red or white most common color. It is used by people, especially for the production of objects of art and ornaments.