Blood entering the lungs exchanges A. Oxygen for nitrogen
B. Carbon dioxide for oxygen
C. Nitrogen for oxygen

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.

Which is one example of a phenotypic change that is not genetic

Explain the significance of thesaurus geographicus