Biology is a natural science that studies life and living organisms, including their structure, function, growth, evolution, distribution, and taxonomy.

Bluetooth is a wireless technology standard that allows the exchange of data between devices over short distances.

A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder.

The Wikipedia page for Global Positioning System (GPS) provides an overview of the satellite-based navigation system developed by the United States Department of Defense.

The Wikipedia page on medicine provides an overview of the field of medicine, covering various aspects such as its history, branches, education, research, practice, and ethics.

Oxygen saturation (symbol SO2) is a relative measure of the concentration of oxygen that is dissolved or carried in a given medium as a proportion of the maximal concentration that can be dissolved in that medium at the given temperature.

The radio spectrum is the part of the electromagnetic spectrum used for radio communication.