Which reason best explains why dead specimens must be used with transmission electron microscopes?

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.

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body