The mediastinum is the space between the lungs. Organs in it include the heart, esophagus, aorta, and part of the thymus gland.
The answer is b. Hope this helps!
Protist are eukaryotic organisms that cannot be classified as a plant animal fungus. They are mostly unicellular, but some like algae, are multicellular. Kelp, or “seaweed” is a large multicellular protist that provides food, shelter, and oxygen for numerous underwater ecosystems.
According to the research, most of the carbon quickly enters back into the atmosphere in the form of carbon dioxide.
<h3>What is the carbon cycle?</h3>
It is the process that describes the flow of carbon (in the form, for example, of carbon dioxide) in the atmosphere, the ocean, the terrestrial biosphere.
Thus, the CO2 in the atmosphere passes through photosynthesis to the plants, also the cycles of respiration and microbial decomposition intervene, which release new CO2 in gaseous form into the atmosphere.
Therefore, we can conclude that according to the research, most of the carbon quickly enters back into the atmosphere in the form of carbon dioxide.
Learn more about carbon cycle here: brainly.com/question/6835895
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