Archaebacteria are called ancient bacteria whereas eubacteria are called true bacteria. Unlike eubacteria, archaebacteria can survive in extreme conditions.
Every cell of the organism has the same DNA sequence and same genes. However, not all genes are expressed in every single cell at the same time. Only those genes necessary for a specialised function of a specialised cell are expressed in the specialised cell. For example, skin cells have some different proteins than nerve cells. Genes responsible for those "skin proteins" are activated in skin cells and are turned off in nerve cells.
Answer:
When pollution occurs on land it travels to the waters which causes the pollutants to enter the water. When pollution enters the water, it damages the algae on the coral. It also lowers water quality, smother the coral reefs, and it speeds the growth of the damaging algae. All these make the coral reefs more susceptible to disease which stops the reefs growth and reproduction.
Explanation:
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<span>metamorphic and igneous rocks
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Only sedimentary rocks can become, by changing temperature and pressure, in metamorphic rocks.
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