Elena and Lin are trying to solve 1/2 x + 3 = 7/2 x + 5. Describe the change they each make to each side of the equation. Elena's first step is to write 3 = 7/3 x - 1/2 x + 5.

Lines of longitude are like stripes from the top of the globe down to the bottom virtually slicing the earth like an orange

How can minerals crystallize from materials dissolved in water? check all that apply.

Which phrases describe oxygen's roles in earth’s atmosphere? check all that apply. allows fuels to burn forms clouds that produce rain is the gas that animals breathe is used by plants to produce food forms ozone that absorbs the sun's harmful rays