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Haldex Traction is a manufacturer of intelligent all-wheel drive (AWD) systems, founded in Sweden. Since the invention of Gen I in 1998, the company produced several generations of products licensed to and customized for some major automotive brands, that in turn have marketed Haldex Traction AWD under different names.
Haldex co-owned (from 2004) the company Alfdex with Alfa Laval, for production of separators for truck engines. Haldex after 2011: In 2011, the Traction division was divested to BorgWarner, including the all-wheel drive. The hydraulic division formed a new company called Concentric and was listed on the Stockholm stock exchange.
Physical geography is the study of Earth's systems and how they interact with one another as part of a single self-contained system. It incorporates astronomy, mathematical geography, meteorology, climatology, geology, geomorphology, biology, biogeography, pedology, and soils geography.
Biogeography (an amalgamation of biology and geography) is the comparative study of the geographic distribution of organisms and the corresponding evolution of their traits in space and time. [146] The Journal of Biogeography was established in 1974. [ 147 ]
In biology, evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs. Biological populations evolve through genetic changes that correspond to changes in the organisms' observable traits.
One way of mapping terrestrial (land) biomes around the world. A biome (/ ˈ b aɪ. oʊ m /) is a distinct geographical region with specific climate, vegetation, and animal life.It consists of a biological community that has formed in response to its physical environment and regional climate.
Historical ecology studies the interactions between people and their environment over the long term. Historical ecology is a research program that focuses on the interactions between humans and their environment over long-term periods of time, typically over the course of centuries. [1]
The history of human ecology has strong roots in geography and sociology departments of the late 19th century. [ 1 ] [ 17 ] In this context a major historical development or landmark that stimulated research into the ecological relations between humans and their urban environments was founded in George Perkins Marsh 's book Man and Nature; or ...