Phenotypic plasticity and ecotypes
The phenotype is the physical expression of the organism. The phenotype shows variations due to differences in the environmental conditions in a habitat. Such variations among individuals produced due to local conditions of the habitat is called as phenotypic plasticity . Species, which..
Domestic Wastes
It includes the wastes generated in houses. It includes paper, plastic, glass, ceramics, polythene, textiles, vegetable waste, et..
Entire Organisms
In rare cases, the entire organism may be preserved. This may happen if the dead bodies of the organisms have been frozen into ice during glaciation, encased in hardened resin or tar or trapped in acidic bogs (bogs are marshy areas where acidic conditions prevent any bacterial or fungal ..
Non-biodegradable
The non-biodegradable wastes are those that cannot be decomposed and remain as such in the environment. They are persistent and can cause various problems. For example, plastics, nuclear wastes, glass, et..
Control of Soil Pollution
a) Ban on use of plastic bags (below 20 microns thickness) - which are major cause of pollution in cities b) Recycling of plastic wastes to manufacture many 'remake' items c) Ban on deforestation d) Encouraging forest replantation programmes e) Encouraging social and agro fores..
Soil Pollution by Industrial Effluents and Solid Wastes
Large quantity of solid wastes like unused and rejected chemicals (like calcium carbonate, magnesium sulphate, ferrous chloride, ferrous oxide, radioactive wastes, fly ashes, sludge, press mud, saw dust, bottles, plastic materials) unwanted industrial wastes generated during manufac..
Incinerator
Molten plastic waste mixed with asphalt can also be used for making roads. This reduces pollution. The volume of the waste can be reduced by incineration or burning at high temperature. From the biodegradable waste, biogas and manure can be prepared, which cost much less than other fuel ..
Pollution of Soil Surface
Large quantity of solid wastes like unused and rejected chemicals (like calcium carbonate, magnesium sulphate, ferrous chloride, ferrous oxide, radioactive wastes, fly ashes, sludge, press mud, saw dust, bottles, plastic materials) unwanted industrial wastes generated during manufacturing..
Mendel's Work
Gregor Mendel was the first to carry out scientific studies on transmission of characteristics from the parent to the offspring. He selected garden peas as they showed many contrasting traits that were easy to track through the generations. Moreover, these plants are naturally self-pollinated. This..
Pollution of surface soils
Urban activities generate large quantities of city wastes including several Biodegradable materials (like vegetables, animal wastes, papers, wooden pieces, carcasses, plant twigs, leaves, cloth wastes as well as sweepings) and many non-biodegradable materials (such as plastic bags, p..
Result
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