When the required mineral nutrients are introduced into a plant's water supply artificially, soil is no longer required for the plant to thrive.

The distinction between the two was artificially introduced in the 17th century, and it remains an area of uncertainty for many Dutch speakers.

Populations have also been artificially introduced in some parts of the world, most notably the Americas and Australasia.

It has been artificially introduced as a decorative garden plant in other areas, especially North America.

What we have here is a population of extinct animals artificially introduced into a closed environment, and allowed to evolve all over again.

There is insufficient data on fish species but they appear to be rather insignificant, bigger species have been artificially introduced for human fishing.

Rainbow trout, which are also resistant to fairly acidic water, have been artificially introduced.

This dark target matter, or chromophore, can be naturally-occurring or artificially introduced.

The artificially introduced excess of whatever causes things in the ecosystem to change for the worse.

By contrast, in quantum mechanics, terms have to be introduced artificially into the Hamiltonian operator to achieve agreement with experimental observations.