The simplest ratio of elements in a compound, representing the relative proportions of each element present.

A mixture of two or more liquids that are normally immiscible, such as oil and water, where one liquid is dispersed in the other.

The hard, outer layer of a tooth, made primarily of hydroxyapatite, which protects the tooth from decay.

A pair of molecules that are non-superimposable mirror images of each other, often found in chiral compounds.

Inflammation of the brain, typically caused by viral infections, and can lead to symptoms like fever, headache, and confusion.

The process by which an organism forms a cyst, often as a protective mechanism or to survive harsh conditions.

The process of forming a cyst, often as a means of protection or dormancy.

A species or condition that is native to and restricted to a specific geographic area.

The ecological state of being endemic, where a species or organism is found only in a particular area.

Referring to reactions that absorb energy from the surroundings, often associated with processes like photosynthesis.