Some of Aristotle's achievements

Answer 1

In Biology, he developed the way to classify plants and animals based on their characterastics.

In math, he developed the system of symbolic logic. It was kind of wrong, and the error was found and corrected in about 1900. It is still used today.

Answer 2

Aristotle made significant contributions to various fields, including philosophy, ethics, logic, biology, and political theory. His work laid the foundation for Western philosophy and science, and his ideas influenced the development of many disciplines for centuries to come. Aristotle's works, such as "Nicomachean Ethics" and "Metaphysics," continue to be studied and debated by scholars around the world.