Summary. Arsenic is a natural element found in soil and minerals. Arsenic compounds are used to preserve wood, as pesticides, and in some industries. Arsenic can get into air, water, and the ground from wind-blown dust. It may also get into water from runoff.
LS is listed as a rare disease by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that LS, or a subtype of LS, affects less than 200,000 people in the US population. LS as a Disease. LS: Another name for Leigh syndrome (or close medical condition association).
Ls. 1. Command used in Linux, Unix, and their respected variants that lists the files and directories in the current directory. 1  See the Linux and Unix ls command page for additional information about this command.