The document outlines various fields of biology including botany, the study of plants; histology, the study of tissues; entymology, the study of insects; zoology, the study of animals; genetics, the study of biological inheritance; ecology, the study of organisms reacting with their environment; anatomy, the gross study of the human body; immunology, the study of immunity from diseases; embryology, the study of early animal development; microbiology, the study of microorganisms; limology, the study of pond water or fresh water; and horticulture, the science or art of growing flowers, fruits, vegetables, or ornamental shrubs.