The term 'regional plant and animal life' can be summarized by the word BIOTA, which is an organism or group of organisms found in a particular region. BIOTA includes all living things, such as plants, animals, fungi, and microorganisms, that inhabit a certain area. It also includes the physical environment in which these organisms live, such as the soil, water, and air. The BIOTA of a region can be affected by human activities, such as pollution, deforestation, and climate change.