Define each of these sub-fields of biology with an example: morphology, anatomy, physiology, histology, cytology, genetics, molecular biology, embryology, paleontology, taxonomy, ecology, marine biology, pathology, immunology, and pharmacology.
Define with examples that biology has many sub-fields: Morphology, Anatomy, Physiology, Histology, Cytology, Genetics, Molecular biology, Embryology, Paleontology, Taxonomy, Ecology, Marine biology, Pathology, Immunology, Pharmacology.