Diethyl ether, a volatile compound used as an anesthetic in medical procedures before being replaced by less flammable options.

A bone in the skull that forms part of the nasal cavity and the orbits of the eyes, located between the eyes.

Relating to both the ethmoid bone and the maxilla, the bone forming the upper jaw.

A scientist who studies animal behavior in natural environments, focusing on the evolution and functions of behavior.

The scientific study of animal behavior, especially in natural environments.

A colorless gas with a sweet odor, C2H4, used in the production of polyethylene and as a plant hormone influencing growth and ripening.

The process by which a plant grows in partial or complete absence of light, leading to pale leaves and a long, spindly growth pattern.

Relating to the cause or origin of a disease or condition.

A kingdom of prokaryotic microorganisms, also known as true bacteria, characterized by having a simple cell structure without a nucleus.

A type of organism whose cells contain a nucleus and organelles, including plants, animals, fungi, and protists.