Here's why:
* Natural science encompasses the study of the natural world, including its physical and biological aspects.
* Physics focuses on the fundamental constituents of the universe and their interactions, including matter, energy, space, and time.
* Biology focuses on the study of living organisms and their interactions with their environment.
While there are other branches of natural science, like chemistry, geology, and astronomy, physics and biology are two of the most fundamental and broad areas of study within it.
