Environmental science mainly studies environmental factors, such as water, air and climate. Ecology mainly pays attention to biological factors, such as population, species and communities. They are closely related, and all kinds of creatures live in a certain natural environment, so they are inevitably influenced by the environment, and their structural habits are all caused by the environment.

Life science is a science that studies life phenomena, the essence, characteristics, occurrence and development law of life activities, and the relationship between various organisms and between organisms and the environment. It is used to effectively control life activities, actively transform the biological world and benefit mankind.