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The functional earth is used for interference suppression. It is a low-impedance current path between the circuitry and earth and is only used to improve the equipment's performance and not (!) for protective purposes.
The Earth is a planet, not an ecosystem. An ecosystem is an area in which the plants and animals all interact to create a living environment. Therefore there are many ecosys â¦ tems on the Earth, which all together form what is called a biosphere. 1 person found this useful. 1  The Five Major Parts of the Brain At its most basic, the brain controls the body.