Biochemistry: the study of the XXXXXXXX XXXXXXXXXX that XXXX up living XXXXXXXXXXXX: the XXXXX XX XXXXXX, including agricultureCellular biology: XXX study of XXX basic XXXXXXXX units of XXXXXX XXXXXXEcology: XXX study of how organisms XXXXXXXX with their environmentEvolutionary biology: XXX XXXXX of XXX origins XXX changes in XXX XXXXXXXXX of life over timeGenetics: the XXXXX of heredityXXXXXXXXX XXXXXXX: XXX XXXXX XX biological XXXXXXXXXPhysiology: XXX XXXXX of XXX functions of XXXXXXXXX XXX their XXXXXXXXXXXX: the study of XXXXXXX, XXXXXXXXX XXXXXX XXXXXXXXAdding to the XXXXXXXXXX of this XXXXXXXX idea is the XXXX that XXXXX XXXXXX overlap. It is XXXXXXXXXX XX XXXXX zoology XXXXXXX knowing a XXXXX XXXX about XXXXXXXXX, physiology XXX XXXXXXX. You XXX't XXXXX cellular biology without knowing XXXXXXXXXXXX and XXXXXXXXX biology XX well.