the Igneous rocks it is a crystalline solids and it is cooled through magma: the liquid phase of solid rock. When Magma's occur at depth in the crust, and are said to exist in the ''magma chambers," is a rather loose term indicating an area where the temperature is great enough to melt the rock, and the pressure is low enough to allow the material to expand and exist in the liquid state. Many different types of igneous rocks can be produced.
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it depends on changes in gene expression
Oxygen is the primary chemical in the decomposition of organic organisms
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A gene is a stretch of DNA or RNA that determines a certain trait. Genes mutate and can take two or more alternative forms; an allele is one of these forms of a gene. For example, the gene for eye color has several variations (alleles) such as an allele for blue eye color or an allele for brown eyes.
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