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As all history occurs in the natural world, environmental history tends to focus on particular time-scales, geographic regions, or key themes. It is also a strongly multidisciplinary subject that draws widely on both the humanities and natural science. The subject matter of environmental history can be divided into three main components. [2]
e. Advanced Placement (AP) World History: Modern (also known as AP World History, AP World, APWH, or WHAP) is a college-level course and examination offered to high school students in the United States through the College Board 's Advanced Placement program. AP World History: Modern was designed to help students develop a greater understanding ...
Green chemistry, similar to sustainable chemistry or circular chemistry, [1] is an area of chemistry and chemical engineering focused on the design of products and processes that minimize or eliminate the use and generation of hazardous substances. [2] While environmental chemistry focuses on the effects of polluting chemicals on nature, green ...
Geography (from Ancient Greek γεωγραφία geōgraphía; combining gê 'Earth' and gráphō 'write') is the study of the lands, features, inhabitants, and phenomena of Earth. [1] Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities —not merely where objects are, but also ...
History. The Society was first established in November 1935 by J.R. Partington (1886-1965), Frank Sherwood Taylor (1897-1956), Douglas McKie (1896-1967), and Gerard Heym (1888-1972), and named the Society for the Study of Alchemy and Early Chemistry. [1] Its object was “the study of alchemy and early chemistry in their scientific and ...
In chemistry, valence bond (VB) theory is one of the two basic theories, along with molecular orbital (MO) theory, that were developed to use the methods of quantum mechanics to explain chemical bonding. It focuses on how the atomic orbitals of the dissociated atoms combine to give individual chemical bonds when a molecule is formed.
In solution chemistry and biochemistry, the Gibbs free energy decrease (∂G/∂ξ, in molar units, denoted cryptically by ΔG) is commonly used as a surrogate for (−T times) the global entropy produced by spontaneous chemical reactions in situations where no work is being done; or at least no "useful" work; i.e., other than perhaps ± P dV.
NCERT textbook controversies. The National Council of Educational Research and Training (NCERT) is an apex resource organisation set up by the Government of India to assist and advise the central and state governments on academic matters related to school education. The model textbooks published by the council for adoption by school systems ...