"Biologists investigate the living world at all levels using many different approaches and techniques.
At one end of the scale is the cell, its molecular construction and complex metabolic reactions. At the other end of the scale biologists investigate the interactions that make whole ecosystems function. Many discoveries remain to be made and great progress is expected in the 21st century."
"Biology." IBO, International Baccalaureate Organization, 2023, www.ibo.org/programmes/diploma-programme/curriculum/sciences/biology/. Accessed 8 May 2023.
