• the only known population of Irrawaddy dolphins in India is along the coast of Orissa?
• the 2006 Zakouma elephant slaughter is the latest of a four decade long series of massacres that has eliminated 97 percent of the Chadian elephant population of 300,000?
• at the time of the Spanish conquest of Mexico, the Tarascan state was the second only to the Aztec empire in size and population?
• populations of the butterfly Henry's Elfin are growing in New England due to the introduction of buckthorn, which the butterflies now use as a host plant?

Facts on topics related to Population

Ecosystem

• thermal vent ecosystems have been discovered in the Aegean Sea, in the caldera of Kolumbo underwater volcano?
• Laguna Ojo de Libre is a World Heritage Site that combines the ecosystems for species such as the grey whale with industrialisation?
• American lexicographer Robert L. Chapman added ecosystem and yuppie to Roget's Thesaurus?
• a regional park established to protect Nevėžis River ecosystem in Lithuania also breeds wisents?
• the ecosystem contained in Myanmar's N'Mai River watershed contains some of the most diverse flora of its type in the world, yet it is threatened with destruction through damming?
• the Norwegian river Lysakerelven, an ecosystem of national importance, has walking and cycling trails on both banks from its source to its mouth at the Oslofjord?
• the Arly-Singou ecosystem shelters the largest remaining population of lions in West Africa?

Organism

• studies in phage ecology indicate that viruses may be the most abundant organisms on Earth?
• the work of medical research scientists (pictured) often includes toxic or radioactive materials and dangerous organisms?

Organ (anatomy)

• Sven-Ivar Seldinger, a Swedish radiologist, first introduced the procedure of obtaining safe access to blood vessels and other hollow organs by use of a wire?
• the epidermis of the mantle, an organ in mollusks, secretes the calcium carbonate that creates their shell?

Macromolecule

• the Gaussian Network Model has a wide range of applications from enzymes composed of a single domain, to large macromolecular assemblies, such as ribosomes and viral capsids?