Ascientist wants to determine when lions and house cats live shared a common ancestor should she use molecular clock that

The majority of sulfur dioxide produced by industry comes from a. oil refineries. b. dry cleaners. c. chemical plants. d. coal-burning power plants.

Match the digestive enzymes to the macromolecules they to digest. break down fats into glycerol and fatty acids break down carbohydrates into simple sugars break down nucleic acids into nitrogenous bases and simple sugars break down proteins into amino acids

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000