Which of the following is/are true? Human-made plastics and nylons do not contain carbon.
Only living organisms contain carbon.
All living and many nonliving materials contain carbon.
All of the above.

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

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.

As studied this week in the cell cycle, we saw how a cell moves through its life with a plan. as you transition from a student at uma to a valued member of your chosen career field, what will you put into place in your life to manage and to fit the new responsibilities of your career into your current life?