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Botany (Greek Βοτάνη (botanē) meaning "pasture", "herbs" "grass", or "fodder" [2]; Medieval Latin botanicus – herb, plant) [3] and zoology are, historically, the core disciplines of biology whose history is closely associated with the natural sciences chemistry, physics and geology.
The size of Africa compared to other continents. Africa is the world's second-largest and second-most populous continent after Asia.At about 30.3 million km 2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area. [7]
In polluted areas, plant growth may be affected by root uptake of arsenate, which is a phosphate analog and therefore readily transported in plant tissues and cells. In polluted areas, uptake of the more toxic arsenite ion (found more particularly in reducing conditions) is likely in poorly-drained soils.
They are used in research into genetics, developmental biology, cell biology, oncology and immunology. [137] Guinea pigs were popular laboratory animals until the late 20th century; about 2.5 million guinea pigs were used annually in the United States for research in the 1960s, [138] but that total decreased to about 375,000 by the mid-1990s. [139]
The Information Age (also known as the Third Industrial Revolution, Computer Age, Digital Age, Silicon Age, New Media Age, Internet Age, or the Digital Revolution [1]) is a historical period that began in the mid-20th century.
India is a habitat for 8.6% of all mammal species, 13.7% of bird species, 7.9% of reptile species, 6% of amphibian species, 12.2% of fish species, and 6.0% of all flowering plant species. [ 199 ] [ 200 ] Fully a third of Indian plant species are endemic. [ 201 ]
Silicon is widely regarded as the predominant semiconductor material due to its versatile applications in various electrical devices such as transistors, solar cells, integrated circuits, and others. These may be due to its significant band gap, expansive optical transmission range, extensive absorption spectrum, surface roughening, and ...