Biosphere

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The biosphere is the sphere of life on Earth that includes all living organisms. It is considered a separate sphere because life itself forms a distinct layer that exists at the intersection of lithos…

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A food chain is a series of organisms where one kind of life becomes food for another kind. It shows the flow of energy and nutrients through an ecosystem. Example: Plants (producers) → Herbivores (li…

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Tropical Evergreen Forests, also called tropical rainforests, are thick forests found near the equator and tropics. They receive heavy rainfall throughout the year with no particular dry season. Trees…

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Tropical Deciduous: Experience seasonal changes, trees shed leaves in dry season to conserve water, found in monsoon regions like India. Trees: sal, teak, neem. Tropical Evergreen: No dry season, tree…

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An ecological crisis occurs when there is a disturbance in the natural balance of ecosystems. This can happen when: 1) A species is exterminated, causing unchecked growth of its food source, 2) Poison…

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This is an example of bioaccumulation and ecological crisis. Diclofenac chemical remains in cattle flesh after death. When vultures consume this flesh, the chemical causes kidney failure and death wit…

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Mediterranean vegetation is found in regions with hot dry summers and wet winters. Trees adapt to dry conditions with thick barks and wax-coated leaves that reduce water loss (transpiration). Found ar…

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Coniferous forests (Taiga) are found in higher latitudes (50°-70°N) and high altitudes like Himalayas. They have tall, softwood, evergreen trees like pine, cedar, chir. Economically important because:…