Answer:
Major areas of science include, life science (of course), and physical science
Explanation:
The reason to explain why life science is a major part of science, is because life science is like the main theme of science. Physical science is an encompassing term for the branches of natural science that study non-living systems, in contrast to the life sciences. However, the term "physical" creates an unintended, somewhat arbitrary distinction, since many branches of physical science also study biological phenomena.
