[Solved] Exchange rate fluctuations increase the variability of returns for investment portfolios that include foreign securities. Analytic Laboratory: A facility equipped for performing scientific experiments and analyses, often involving chemical or biological substances. Optical Microscope: A laboratory instrument used to magnify objects that are too small to be seen with the naked eye by using lenses and light. Condenser: A device used to condense a substance from its gaseous to liquid state by cooling. Foreign Objects: Items or substances present in parts of the body where they do not naturally belong, potentially causing harm.