The respiratory zone is the site of gas exchanges and includes any structure in which are found

With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite

When listening the levels of orginization in orginisims from the smallest to most complex , which level is just below organs in complexity

Compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.