It was referred to as the Homo erectus.
Many clinicians diagnose disorders by using criteria listed in the DSM-5. The DSM-5 is the abbreviations for the diagnostic and statistical manual of mental disorders, it is the handbook used by the healthcare professionals as the guide to the diagnosis of mental disorders. It contains descriptions, symptoms, and other criteria for diagnosing mental disorders.
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A stream channel is the physical confine of a stream consisting of a bed and stream banks. Stream channel development is controlled by both the water and sediment movement.
Acids and bases are important in living things because most enzymes can do their job only at a certain level of acidity. Cells secrete acids and bases to maintain the proper pH for enzymes to work. For example, every time you digest food, acids and bases are at work in your digestive system.