To Kill a Mockingbird, I believe is set in Alabama in around the 1960s. This was when racism was very prevalent in society. Stereotypes were made because racism was a normal thing for them.
Lungs, bronchi, bronchus, diaphragm, trachea, alveoli, pharynx, nasal cavity, etc.
Currently contains the largest single cell. Fact: dinosaurs had even larger eggs
Phytoplankton form the base of a pelagic marine ecosystem.