Answer:
Hope this helps :)
https://www.sciencedirect.com/topics/engineering/nitrogen-source
Think this is the website you're looking for
Explanation:
In geometry the base is the side or face of a geometric figure to which an altitude is drawn,
Answer: The cell is the basic structural and functional unit of living organisms
Explanation:
Antigens; they are molecules that are foreign to the body, thus stimulating a response by the b- and t-cells that aim to defend the body against harmful and mostly foreign bacteria.
