Provides definitions of keywords starting with the letter 'Z' within the life, earth and environmental sciences and includes resources for further information.

Provides definitions of keywords starting with the letter 'Y' within the life, earth and environmental sciences and includes resources for further information.

Provides definitions of keywords starting with the letter 'X' within the life, earth and environmental sciences and includes resources for further information.

Provides definitions of keywords starting with the letter 'W' within the life, earth and environmental sciences and includes resources for further information.

Provides definitions of keywords starting with the letter 'V' within the life, earth and environmental sciences and includes resources for further information.

Provides definitions of keywords starting with the letter 'U' within the life, earth and environmental sciences and includes resources for further information.

Provides definitions of keywords starting with the letter 'T' within the life, earth and environmental sciences and includes resources for further information.

Provides definitions of keywords starting with the letter 'S' within the life, earth and environmental sciences and includes resources for further information.

Botanical and ecological factors determine the abundance of bird populations in forest ecozones.

The Nearctic is one of the earth's eight terrestrial ecozones covering most of North America, Greenland and the highlands of Mexico.

The cerebellum or "little brain" is a brain region important for integration of sensory perception, coordination and motoric control.

Ionizing electromagnetic radiation makes it possible to view biological objects such as tissues, cells and viruses in exciting detail.

Patch clamp studies are laboratory investigations using electrophysiology techniques for identifying single or multiple ion channels in cells.

Deficiency in the glycoprotein can lead to chronic tissue breakdown in humans.

Covers historic and current discoveries of existing and extinct animal, insect and plant species.

Tropical rainforests cover 13% of the Earth's land surface, account for 50% of the world's forests and the vegetation contains 40% of the world's carbon.

Recovery and use of organic wastes is one major route for saving of energy and ressources.

Aspergillus flavus is a fungus of humans, animals, and insects producing significant quantities of potentially deadly aflatoxin.

Rural poverty persists in developing as well as developed countries.