Give me two examples of a pushing force and two examples of a pulling force:

A pushing force example could be a button, like on a keyboard.

Another example would be a piston.

An example of a pulling force could be a lever.

Another example could be rope.

Hope this helps! c:

vapour or gas assuming atmospheriv pressure

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.