Characteristics of Biotic Factors Made of cells. Consist of levels of organization (cell, tissue, organ, organ system) Respond and adapt to their environment.
Cells 9/25/09. A Brief History Robert Hooke – In 1664, he saw the 1 st cell and named it a cell (cork); used a microscope Anton van Leeuwenhoek – 1 st.
Histology
