An apple is placed on a scale. the scale shows that the apple weighs 1/4 a pound. this demonstrates that the apple has a: atoms. b: elements. c: vitamins. d: weight.

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.

Which statement is true regarding the diagram of circle p? the sum of y and z must be 2x. the sum of y and z must be x. the difference of z and y must be 2x. the difference of z and y must be x