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After the expedition, Grinnell invited Curtis with him on a trip to the Blackfeet Reservation in Montana. Curtis, moved by what was commonly believed to be a dying way of life, spent much of his career documenting Native American culture. [5] At first, John Muir found Harriman distasteful and his hunting barbaric [6]. But, over the course of ...
The category does not include commercial expeditions, such as some of the early whaling expeditions to Antarctica. Many expeditions had a chief purpose of discovery, such as the Luís Vaz de Torres or Lewis and Clark Expedition, but were also commissioned to study the geology, botany, and zoology they were to be found in the unexplored lands.
Deep-sea exploration vessels must operate under high external hydrostatic pressure, and most of the deep sea remains at temperatures near freezing, which may cause embrittlement of some materials. Structural geometry, material choices and construction processes are all important design factors.
Nurture is generally taken as the influence of external factors after conception e.g. the product of exposure, experience and learning on an individual. The phrase in its modern sense was popularized by the Victorian polymath Francis Galton , the modern founder of eugenics and behavioral genetics when he was discussing the influence of heredity ...
External factors such as climate, parent material which forms the soil and topography, control the overall structure of an ecosystem but are not themselves influenced by the ecosystem. Internal factors are controlled, for example, by decomposition , root competition, shading, disturbance, succession, and the types of species present.
An exogenous contrast agent, in medical imaging for example, is a liquid injected into the patient intravenously that enhances visibility of a pathology, such as a tumor.An exogenous factor is any material that is present and active in an individual organism or living cell but that originated outside that organism, as opposed to an endogenous factor.
Biological oceanography is the study of how organisms affect and are affected by the physics, chemistry, and geology of the oceanographic system.Biological oceanography may also be referred to as ocean ecology, in which the root word of ecology is Oikos (oικoσ), meaning ‘house’ or ‘habitat’ in Greek.
Jamieson's early scientific work focussed largely on technology-driven studies into deep-sea fish behaviour and pelagic bioluminescence.He completed two EU funded postdocs, the first a sediment dynamics project named COBO (Coastal Ocean Benthic Observatories [10]), that involved the design and construction of a deep-water Sediment Profile Imaging camera (SPI), the second was an astrophysics ...