Earthworm is the common name for the largest members of Oligochaeta (which is either a class or subclass depending on the author) in the phylum Annelida. In classical systems they were placed in the order Opisthopora‚ on the basis of the male pores opening posterior to the female pores‚ even though the internal male segments are anterior to the female. Theoretical cladistic studies have placed them instead in the suborder Lumbricina of the order Haplotaxida‚ but this may again soon change. Folk names
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The temperature of the Riparian zone affects the physical and the chemical properties of the water and largely influences the organisms affecting their feeding‚ metabolic rates and reproduction. It also affects how much oxygen can be dissolved in the water and how quickly the nutrients will be cycled through the water. Oxygen is better dissolved in cold water because gases are trapped by water molecules at colder temperatures. When temperatures rise‚ the molecules move around more‚ and gases‚ such
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Himalayan Foothills The famous Himalayan Mountains are gifted with shining glaciers and continuous rivers‚ expressing beauty and elegance. Although the tops of these mountains are glamorous and dazzling‚ the foothills of these beautiful mountains are a critical erosional hotspot on earth. The Himalayan Foothills are found around the lower regions of the Himalayan Mountains‚ stretching from the west of Pakistan to the east of Namche Barwa (crossing six nations). There are many causes for the
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Land degradation From Wikipedia‚ the free encyclopedia Serious land degradation in Nauru after the depletion of the phosphate cover through mining Land degradation is a concept in which the value of the biophysical environment is affected by one or more combination of human-induced processes acting upon the land.[1] It is viewed as any change or disturbance to the land perceived to be deleterious or undesirable.[2] Natural hazards are excluded as a cause‚ however human activities can indirectly
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and have thin organic and mineral layers overlying a yellowish-brown leached layer resting on red layer made of iron oxide(ferric oxide). Red soils generally form from iron-rich sediments. They are usually poor growing soils‚ low in nutrients and humus and difficult to cultivate. These soils are developed on old crystalline rocks under moderate to heavy rainfall conditions. They are deficient in phosphoric acid‚ organic matter and nitrogenous material. Red soils cover the eastern part of the peninsular
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Ecology is the study of interrelationship between living organisms and their environment. Life and environment are interdependent. The plant and animal life is effected by various environmental factors and in turn they modify their environment in various ways. The main theme of ecological studies is the relationship between organisms and environment‚ so ecology may well be called as "Environmental Biology." Growth‚ development and destruction of all organisms is determined by physical and biological
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Forests are precious national resource whim not only play significant role in national condor but help in pollution control and maintaining logical balance. These offer a number of direct indirect advantages which have been realised sin time immemorial. Direct Advantages 1. Forests provide valuable timber for dome tic and commercial use. Industries like paper‚ matt making‚ plywood‚ sports goods‚ lakh and furniture at directly based on raw materials derived from forest 2. Forests supply a
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the method of conservative tillage‚ where farmers disturb surface topsoil and vegetation minimally. The reason I would not use no-till cultivation because it requires the use of pesticides which can harm the surrounding ecosystems. I would also use humus while preparing my land because it adds organic matter to the soil. Looking ahead I would choice to use crop rotation because the same nutrients are not depleted from the soil each season. When thinking of how I would enrich the soul I would only use
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locations (if not the same) to compensate devastations done at one location. In this consumerist world we can evaluate value of Plant in the monetary terms also and I am sure that a single plant producing Oxygen‚ giving stability to soils‚ provide humus‚ shelter etc can make it worth crores while it is live. And a whole wood has much more valuation. So we must think for long terms benefit like true consumers. We must think about our grandchildrens‚ What will we left for them. We should become less
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Parasitic plants: Strangling fig wraps itself around the trunk of the host tree and competes with it for nutrients and sunlight‚ eventually killing the host tree Leaf litter: leaves that fall from trees decompose quickly to form a layer of humus Humus: rich in nutrients‚ supports abundant vegetation growth Making furniture and other objects: Keruing‚ meranti‚ chengal‚ kapur (species of trees) Tropical rainforests are extremely dense. Leaves are: evergreen‚ large and broad to increase
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