oxygen
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Oxygen is a colorless, odorless, tasteless gas that is the third most abundant element in the universe. It was discovered in the late 18th century by Scheele, Priestley, and Lavoisier. Oxygen is essential for human life and occurs freely as O2 or combined as oxides and silicates. It has poor conductivity but dissolves readily in water. Oxygen supports combustion, is non-combustible itself, and is used for respiration, rocket fuel, welding, and removing carbon impurities from metals.
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This Dissertation explores the particular circumstances of Mirzapur, a region located in the
core of India. Mirzapur, with its varied terrains and abundant biodiversity, offers an optimal
environment for investigating the changes in vegetation cover dynamics. Our study utilizes
advanced technologies such as GIS (Geographic Information Systems) and Remote sensing to
analyze the transformations that have taken place over the course of a decade.
The complex relationship between human activities and the environment has been the focus
of extensive research and worry. As the global community grapples with swift urbanization,
population expansion, and economic progress, the effects on natural ecosystems are becoming
more evident. A crucial element of this impact is the alteration of vegetation cover, which plays a
significant role in maintaining the ecological equilibrium of our planet.Land serves as the foundation for all human activities and provides the necessary materials for
these activities. As the most crucial natural resource, its utilization by humans results in different
'Land uses,' which are determined by both human activities and the physical characteristics of the
land.
The utilization of land is impacted by human needs and environmental factors. In countries
like India, rapid population growth and the emphasis on extensive resource exploitation can lead
to significant land degradation, adversely affecting the region's land cover.
Therefore, human intervention has significantly influenced land use patterns over many
centuries, evolving its structure over time and space. In the present era, these changes have
accelerated due to factors such as agriculture and urbanization. Information regarding land use and
cover is essential for various planning and management tasks related to the Earth's surface,
providing crucial environmental data for scientific, resource management, policy purposes, and
diverse human activities.
Accurate understanding of land use and cover is imperative for the development planning
of any area. Consequently, a wide range of professionals, including earth system scientists, land
and water managers, and urban planners, are interested in obtaining data on land use and cover
changes, conversion trends, and other related patterns. The spatial dimensions of land use and
cover support policymakers and scientists in making well-informed decisions, as alterations in
these patterns indicate shifts in economic and social conditions. Monitoring such changes with the
help of Advanced technologies like Remote Sensing and Geographic Information Systems is
crucial for coordinated efforts across different administrative levels. Advanced technologies like
Remote Sensing and Geographic Information Systems
9
Changes in vegetation cover refer to variations in the distribution, composition, and overall
structure of plant communities across different temporal and spatial scales. These changes can
occur natural.
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oxygen
- 1. OXYGEN From Science Book Standard-8, Term-2, PPT Prepared by, P .P .EVELIN BANU.
- 2. Basic needs essential for human life..
- 9. Oxygen
- 10. Discovery of Oxygen C.W.Scheele in 1772 -Fire air or Vital life Joseph Priestley in 1774 Lavoisier named oxygen
- 11. Occurrence Most abundant element on earth 3rd after Hydrogen and Helium in the universe Free state as O2 Combined state as silicates and metal oxides In water O3 as Upper layer of the atmosphere
- 12. Physical Properties Colourless Odourless Tasteless
- 13. Physical Properties Poor conductor of heat and electricity Dissolves readily in water Denser than air
- 14. Physical Properties Can be made into liquid at high pressure and low temperature Supports combustion
- 15. Chemical Properties Non Combustible
- 20. Uses Respiration Synthesis of methanol and ammonia Explosives Oxy-acetylene light for cutting and welding metals Oxidize rocket fuel Removing carbon impurities
- 21. Thank you..