the branch of science which deals with celestial objects, space, and the physical universe as a whole.
<em>Contradictory claims made by some experts</em><em> is a characteristic of Pseudoscience fact.</em>
<u>EXPLANATION: </u>
Pseudoscience is characterized by contradictory claims that are said to be scientific, but they are not compatible with scientific methods. They are the statements or beliefs that are usually not open for evaluation by other experts.
Also, these are not studied facts which means there is a lack of evidence to support them scientifically. These beliefs are also very resistant to change. For example, Astrology is a Pseudoscience. Other examples are theories related to Bermuda Triangle, Ancient Aliens, etc.
I think it is C as plants take in Co2 and release oxygen which humans use to breathe.
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