Earth Science: This is the study of Earth, its properties, and the atmosphere. Examples of subfields include meteorology, geology, and oceanography. Life science : This is the study of living things. Examples of subfields include biology, botany, ecology, and genetics.
Earth science is a broad spectrum of science that covers life science and physical science. Life science is all about the study of living organisms and their relationships including biology, anatomy, ecology, etc. It is the study of the earth and its neighbouring celestial bodies of the solar system.