Name two functions of the respiratory system other than gas exchange

If you want to change the pitch of a sound, you have to change the question 7 options: volume speed amplitude frequency

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.

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.