Which is the most accurate description of compounds? a. they are formed by elements that join in any given mass ratio. b. they have the same properties as the elements that make them up. c. they have a unique set of properties that can be used as identifiers. d. they cannot be broken down into the elements that form them through chemical changes.

invention of the washing machine

in the past, people used sticks and stones or scrub boards to clean their clothing. as it was sweaty, backbreaking work, we owe a world of to james king because he created the model for the modern washing machine in 1851. the most important issue was that this machine cleaned clothes while a person cranked the handle. doing this made people who used it develop strong muscles in their arms. later, in 1908, alva j. fisher created an electric washing machine named thor. this one was not the first automatic washing machine. however, it was one of the most popular models at the time.

the answer is inspiration-apex