UPSC Notes
Loss of Biodiversity – Biodiversity and Conservation

Biodiversity loss refers to the decline or disappearance of biological diversity, understood as the variety of living things that inhabit the planet, its different levels of biological organisation and their respective genetic variability, as well as the natural patterns present in ecosystems. ...

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Importance of Biodiversity – Biodiversity and Conservation

Biodiversity is the variety of life on Earth and we human beings, we directly depend on biodiversity to survive. Biodiversity helps to maintain balance in the natural world and prevents living organisms from becoming extinct. It also provides a variety of food and other resources like building ...

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Levels of Biodiversity – Biodiversity and Conservation

Biodiversity encompasses the variety and variability of life on Earth. It is a measure of the number of different species, genes, ecosystems or habitat types in an area. The greater the biodiversity, the more efficient the ecosystem in providing nutrients, decomposing wastes, regulating ...

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Biodiversity and Conservation

Biodiversity is the branch of biology that deals with the diversity within species, between species and in ecosystems. Biodiversity is essential to ecosystem functioning and human well-being. It provides food, fiber, medicines, clean water and fresh air. It helps regulate water cycles and ...

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Ecological Balance – Life on the Earth

The organisms and habitat together form what we call an ecosystem. Ecosystems can vary greatly in size. From tiny microorganisms to large landscapes, ecosystems allow the earth’s living things to survive and thrive. Ecological balance is a state of dynamic equilibrium within a community of ...

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Biogeochemical Cycles – Life on the Earth

The biogeochemical cycles of the biosphere relate to essential processes that take place within and between the major cells and organisms that make up living systems and that alter and shape them. The word biogeochemical also implies the integration of the biological, geological, and chemical ...

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Types of food-chains – Life on the Earth

Food chains are essentially a process of energy transfer. Cells, at the base of the chain, convert light into chemical energy. During photosynthesis, plant cells produce glucose to use for energy and for the production of more complex compounds. Herbivores eat autotrophs, while carnivores ...

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Structure and Functions of Ecosystems

The ecosystem consists of living organisms and non-living elements in a particular environment. The ecosystem can be a terrestrial or aquatic ecosystem. The terrestrial ecosystem includes interaction between the species in the terrestrial region whereas the aquatic one includes species living ...

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