What is true about all real machines? =equals

>greater than

work output = work input

work output > Work Input

work output < work input

work output may be < or > work Input

What are two ways in which waves erode the land?

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area

Describe the trends in electron configuration in the periodic table by selecting the terms from the drop down menus