Answer:
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answer explanation: <u>A reference designator indicates the location to insert a component on an item, for example, where to mount an electronic component on a printed circuit board. ... Link a single reference designator to a single (E)BOM line. One or more identical items on the (E)BOM line have the same reference designator.</u>
Geologists classify rocks in three groups, according to the major Earth processes that formed them. The three rock groups are igneous, sedimentary, and metamorphic rocks. Anyone who wishes to collect rocks should become familiar with the characteristics of these three rock groupsOne way to tell if a rock sample is sedimentary is to see if it is made from grains. Some samples of sedimentary rocks include limestone, sandstone, coal and shale. Igneous rocks form when magma from inside the Earth moves toward the surface, or is forced above the Earth's surface as lava and ash by a volcano. Igneous rocks are formed from melted rock that has cooled and solidifiedhe three rock groups are igneous, sedimentary, and metamorphic rocks
True. People burn fossil fuels to create heat and electricity for our homes and other buildings.
