Letusan gunung merapi pada tahun 2010 mengakibatkan perubahan ekosistem dilingkungan sektrnya. perubahan keseimbangan pada peristiwa tersebut terjadi
a. lingkungan tdk memiliki daya lenting
b. kerusakan melebihi daya lenting lingkungan

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this

artificial selection

explanation:

this occur when man select base on their intelligent