The theory of plate tectonics affirms that a. the earth’s outer shell is one solid piece of rock. b. the basic arrangement of oceans and continents is unchanging. c. large moving slabs of rock slide slowly over a layer of the mantle. d. the landscape of the ocean is the same as that on earth.

Which of the following expressions is equivalent to -1/4y - 2 1/4 + 1/2 (4-2y)? a. -3y + 2b. -3 1/2+4c. -4 1/2y+2d. -4 1/2y+2show ur work

If we represent the solar system on a scale that allows us to walk from the sun to pluto in a few minutes, then a) the planets are microscopic and the stars are millions of miles away. b) the planets are the size of basketballs and the nearest stars are a few miles away. c) the planets are marble size or smaller and the nearest stars are thousands of miles away.

As water is cooled from 4 c to 0 c its density