1. A is a tool that makes it easier to do work.
2. A is a bar that moves about a fixed point.
3. The fixed point of a lever is its .
4. The force applied to a machine by a user is called the
.

Any sound above what db can cause hearing loss in human beings

Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?

(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.