What material will oxidize when it is exposed to oxygen and water? a. stone c. plastic b. metal d. plants Please select the best answer from the choices provided A B C D

Which identifies the main purpose of biological taxonomy?

Name the organs of humanelemintary canal.

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.