The _____ states that energy cannot be created or destroyed.

Resistance force divided by effort force equals

Work = _______

Machines are used to

A string of lights where one light going out puts the whole string down is likely using

Magnetic poles of the same type _____ each other

A(n) _____ consists of a rope, chain or belt wrapped around a wheel.

A screw contains a(n ____

The following image is that of a

A fish uses its ____ to move up and down in the water

A sponge gets food by _____.

_____ allow animals to live on land

The study of how living things interact with one another and with nonliving things in their environment is called ____.

A plant is almost always considered a(n) _____ (pick the most correct answer)

Water, air, and sunlight are examples of _______

Evolution's definition is _____ changes over a long period of time

If I pull on a pulley with a force of 20 N but am able to lift an object that has a 2,000 N resistance, what is the mechanical advantage of the pulley?

Another name for asexual reproduction is _____ (the most correct answer please)

Most food systems on planet earth begin with