Measure the distance from force to fulcrum and from load to fulcrum on your own arm and then calculate the force needed to hold in place a 25 pound load. Show your calculations. (Note: your distance measurements will be rough approximations)

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

i think that the answer is c