Gas exchange in humans is the delivery of oxygen lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs.
This is determined by its atomic number. The atomic number of an element determines its protons. So for example....
The atomic number of Boron is 5, therefore....the protons are 5.
If the sediments are put down, it's deposition
If the sediments are being moved, it's erosion
Prokaryotes don't have a nucleus so it's bacteria :)
C I believe because they are living so they are able to breath
