Under which branch of biology is the study of environment done?

The study of environment is done under the branch of biology called ecology. Ecology focuses on the relationships between living organisms and their physical surroundings. It examines how organisms interact with each other and with their environment, including factors such as climate, soil, water, and other abiotic and biotic components.
Ecologists study ecosystems, population dynamics, community structure, and biodiversity to understand how these systems function and how they are affected by various factors such as human activity and natural events. This field of biology is essential for addressing environmental challenges such as climate change, habitat destruction, and resource management. By studying ecology, scientists can develop strategies for conservation and sustainable practices that help protect ecosystems and maintain the balance of natural environments.