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This is concerned more with nature's services which also make vital contributions to the welfare of society and to ecological processes without which our planet would be uninhabitable. Biodiversity contributes to varied ecosystem services that include numerous invisible but essential services. These are the recycling of elements such as carbon, oxygen and nitrogen and other nutrients, decomposition and waste dissipation, productivity and carbon storage, soil formation and fertility generation, reduction of soil salinity, water recharge, maintenance and raising of water table, enhancement of water and air quality etc. Other indirect uses including pollination, gene flow, carbon sequestration, absorption and breakdown of pollutants (in land, air and water), maintaining soil fertility by soil microflora, are important services provided by biodiversity. Biodiversity also acts as a buffer against excessive variation in weather, climate and other natural events (e.g. through flood control, storm protection, drought control etc.) and many more that are outside the control of human beings.
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Q. Does the fish heart pump venous or arterial blood? After oxygenation in the gills the arterial blood goes to the tissues so the fish heart pumps venous blood, the venous blo
What is the Bio-medical waste The Bio-medical waste (Management & Handling Rules), 1998 is applicable to all persons, who generate, collect, receive, store, transport, treat,
What is Optic Chiasma This structure makes upto portion of the anterior inferior floor of the third ventricle. It is shaped like a flat oblong bridge and connects the optic ne
Birds and Mammals - Heart is 4 chambered. 2 auricles & 2 ventricles. Sinus venosus & truncus arteriosus absent. Arteriovenous heart. Double circulation i.e. pre
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Criteria of Essentiality Amon and Stout as early as 1939, suggested certain criteria that an element must fulfil in order to be classified as essential. These criteria are lis
How can asexual reproduction in planarias be described? Planarias can separate themselves asexually by transversal bipartition because of the great regeneration capability of t
Define B-Complex Vitamins required for elderly? B-Complex Vitamins: Various B complex vitamins especially B folic acid, B 6 , and riboflavin are found to affect favourably t
Prevention of Infection 1. Strict asepsis practiced in ICU. 2. All the invasive lines are covered with sterile-drape. 3. Antibiotics-broad-spectrum ones are adm
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