The somatic nervous system which consists of the peripheral nervous system. Think outside or between your spinal cord and brain. The somatic nervous system acts as an intermediary between the brain and spinal cord. This is where the relay of messages occur between the two. In a simple explanation.
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Natural resources are used to make food, fuel and raw materials for the production of goods. Natural resources such as coal, natural gas and oil provide heat, light and power.
A is direct variation because the line does not curve and x and y are in a direct ratio
Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death.