What are the four major sciences?

There's no single universally agreed-upon list of "the four major sciences," as the field is far more nuanced than that. However, a common way to broadly categorize the sciences involves grouping them into:

* Physics: The study of matter, energy, and their interactions. It forms a foundation for many other sciences.

* Chemistry: The study of matter and its properties, as well as how matter changes. It bridges physics and biology.

* Biology: The study of life and living organisms, including their structure, function, growth, origin, evolution, and distribution.

* Earth Science (or Geoscience): This is often considered the fourth major area and encompasses the study of Earth's structure, composition, processes, and history. This can be further subdivided into geology, oceanography, meteorology, and astronomy (though astronomy sometimes gets its own separate classification).

It's important to remember that these fields are interconnected and overlap significantly. Many sub-disciplines blend aspects of multiple major sciences.