Help out with 5 and 6 please

Which two molecules do green plants use to make glucose? o a. nitrogen and water o b. hydrogen and oxygen o c. carbon dioxide and water o d. methane and iron oxide

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.

Which of the following is the best definition of a eukaryota? a. a one-celled organism that does not have a membrane-bound nucleus b. a one-celled organism that does not have a cell wall c. an organism whose cells each contain a membrane-bound nucleus d. an organism whose cells each have a cell wall