Well, another name for businesses in the trade-only industry can't be contractors or retailers because contractors are people who enter into a contract or has a contract to perform certain tasks and retail is the sale of products or goods in small quantities to people for their own use. I think another name for businesses in the trade-only industry is suppliers. Hope this helped!
Answer:
18. The grid lines point to a Grid North, varying slightly from True North. This variation is smallest along the central meridian (vertical line) of the map, and greatest at the map edges. The difference between grid north and true north is very small and for most navigation purposes can almost always be ignored.
19. Most military maps will display the declination diagram in the lower margin. Some maps may not display the declination diagram and will only list the declination information as a note in the map margin. The G-M angle value is the size of the angle between grid north and magnetic north.
20. Must be oriented
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ok I'm done
