Choose all the answers that apply. Which of the following increases erosion?

careless farming
crop rotation
leaving fields unplanted
clearing forests
contour plowing

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium