PLZ HELP FOR A TEST! A student walks 3 blocks east, 4 blocks north, and 3 blocks west. What is the displacement of the student?

2 blocks north
4 blocks north
4 blocks south
10 blocks north

As , plants meet their needs for making food from air, soil, water, and the sun's energy in a process called there are plants called grow high in trees without here are words to put in the blanks. 1.) producers 2.) consumers 3.) chloroplasts 4.) epiphytes

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

If a balloon is taken outside on a very cold day, what will occur?