Modifies a noun

• weapon: In my opinion, the problem of defense against biological weapons is mostly a medical problem.

• diversity: Other tropical rain forests are similarly rich in biological diversity.

• agent: Researchers exposed to biological agents could also pose a risk to residents.

• warfare: Susan Lambert's film tells us above all about the science behind biological warfare.

• science: Many seminal works in the history of the biological sciences are present.

• macromolecule: Her research uses techniques of X-ray crystallography to determine the structures of biological macromolecules.

Modifying Another Word

• purely: Such interests are common to most human beings, and are functions of the fact that human beings are purely biological creatures.

• strictly: Amazing how often one finds non-trained biologists giving their point of view about the strictly biological side of things.

• possibly: We believe North Korea has active CW and BW programs and probably has chemical and possibly biological weapons ready for use.

• also: See also biological filtration and ion exchange for methods to remove ammonia from the water.

• not: It is not biological or ' scientific ' racism.

• exclusively: Is it possible to have an exclusively biological theory of human nature?

Used with adjective complement

• use: Freshwater Ecology ( GCSE and A-Level ) A number of stream sites are studied using biological, chemical and environmental sampling techniques.