Alveoli, tiny air sacs of the lungs which allow for rapid gaseous exchange.
Cardiac muscle cells appear striates or striped under a microscope.
Answer:
C. Isolated system
Explanation:
The question above is related to the the topic, "Thermodynamics."
Thermodynamics refers to how energy is being transferred among molecules. This study focuses on the "system" and the "surroundings/environment"
There are actually<u> three types of systems</u><em> (open, closed and isolated).</em> When it comes to "isolated system," such system doesn't interact with the surroundings. This means that, i<u>t is incapable of exchanging energy or matter with its environment.</u> This means that neither mass nor energy will be able to enter it; thus, it recycles all of the mass on its own.