Description
A coral reef is a built underwater make of calcium carbonate secretes by corals. Is one tipe of reef biotic factured by colonies
of stony corals,who usually lives in marine waters who contains few nutrients.
Concrect information
You have to write short sentences. Because the writing dont have sense.
This is of a reef generally round,but most small a drop.
Can be of one beef solitary,or part of training of reefs of
great size.The term erg sometimes also is used for towers of coral more large that,in rigour,are arouks.Coral reef lives in saltery water
Examples:Erg of Abu Diab.
EXPLAIN THE EXPERIMENT:
Objets:
plastic box
plastic bottle 2 Lts
Fairy
Vinegar
Colorants
Oil
Playdought
Coral toy
Animals toy
Steps of experiment
1º Around the bottle put playdough
2º With playdough male a coral reef
3º With playdough make a island in the box
4º Put the coral reef in the box
5º Then with playdough to make algas
