Degradation is the process by which a chemical substance is broken down to smaller molecules by biotic means (biodegradability) or abiotic means (hydrolysis, photolysis or oxidisation). Half-lives (DT50) are used as measures of the stability and persistence of a chemical substance in the environment.
What is degradation and examples?
Degradation is the act of lowering something or someone to a less respected state. A president resigning from office is a degradation. It’s also a downcast state. Once the president has resigned, he might feel degradation. The noun degradation is related to the verb degrade, which comes from the Latin degradare.
What is the meaning of degrade in science?
: change of a chemical compound to a less complex compound. Other Words from degradation.
What does degradation mean in medical terms?
A decline to a lower condition, quality, or level. 4. Chemistry Decomposition of a compound, especially complex substances such as polymers and proteins, by stages, exhibiting well-defined intermediate products.
What is the cause of degradation?
Environmental degradation is a result of the dynamic inter play of socio-economic, institutional and technological activities. Environmental changes may be driven by many factors including economic growth, population growth, urbanization, intensification of agriculture, rising energy use and transportation.
What are the main processes of degradation?
- microstructural and compositional changes,
- time-dependent deformation and resultant damage accumulation,
- environmental attack and the accelerating effects of elevated temperature, and.
- synergistic effects among the above.
What is degradation short answer?
Land degradation is a process in which the value of the biophysical environment is affected by a combination of human-induced processes acting upon the land. It is viewed as any change or disturbance to the land perceived to be deleterious or undesirable.
What is the word for degradation?
degeneration, deterioration, abasement, debasement, decadence, decline, degeneracy, demotion, derogation, discredit, disgrace, dishonor, evil, humiliation, ignominy, mortification, perversion, reduction, downgrading.
What is degradation of ecosystem?
Generally, ecosystem degradation is any process or activity that removes or lessens the viability of ecosystem processes and hence biodiversity (DUNSTER & DUNSTER 1996). Traditional approach to ecosystem degradation combines land degradation and some changes in the particular non-physical patterns within an ecosystem.
What is the sentence of degradation?
They were sickened by the scenes of misery and degradation they found. She described the degradations she had been forced to suffer. I feel this signals the degradation of American culture. There are serious problems of land degradation in some arid zones.
What is the result of biodegradation?
Biodegradation is the degradation of the materials into environmentally acceptable products such as water, carbon dioxide, and biomass by the action of naturally available microorganisms under normal environmental conditions.
What does it mean to be degrade?
1a : to lower in grade, rank, or status : demote. b : to strip of rank or honors. c : to lower to an inferior or less effective level degrade the image quality. d : to scale down in desirability or salability.
What are the effects of degradation?
Environmental degradation can lead to a scarcity of resources, such as water and farmable. Extreme weather events, such as severe flooding, increase the spread of waterborne diseases, such as malaria and diarrhoea. The effects of the major environmental problems on both health and productivity are: a.
What are the types of degradation?
The five most common forms of environmental degradation [are]: deforestation, rising sea levels, desertification and drought, land degradation, and finally, water and air degradation.
What are the causes of ecosystem degradation?
What causes the destruction of ecosystem? Pollution is one of the main causes of ecosystem destruction. Pollution can deplete resources and drive away local animal populations. Significant sources of pollution include trash, carbon emissions, oil spills and pesticides.
Which of the following is a degradation process?
Weathering, mass-wasting, and erosion are degradational processes. It is erosion that is largely responsible for continuous changes that the earth’s surface is undergoing.
How does temperature affect degradation?
Thermal degradation occurs when the polymer changes its properties under the influence of increased temperature. Initially, it causes the migration of low-molecular-weight additives in aging materials, if any are present.
How does soil degradation happen?
It can be the loss of organic matter, decline in soil fertility, and structural condition, erosion, adverse changes in salinity, acidity or alkalinity, and the effects of toxic chemicals, pollutants or excessive flooding. Soil degradation can involve: water erosion (includes sheet, rill and gully erosion) wind erosion.
What is biological degradation of soil?
Biological degradation of soil as described herein refers to the impairment or elimination of one or more “significant” populations of microorganisms in soil, often with a resulting change in biogeochemical processing within the associated ecosystem.
What is soil erosion and degradation?
Soil erosion is the denudation of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, and animals (including humans).
What is opposite of degradation?
Opposite of a change to a lower or inferior state or level. improvement. amelioration. growth. betterment.
What is environment degradation give a few examples?
Deforestation falling levels of ground water soil erosion water pollution burning of fossil fuels the hole in the ozone layer and combustion from automobiles causing extreme air pollution especially in urban areas are some of the examples of environmental degradation.
What are effects of environmental degradation?
Consequences include increased poverty, overcrowding, famine, weather extremes, species loss, acute and chronic medical illnesses, war and human rights abuses, and an increasingly unstable global situation that portends Malthusian chaos and disaster.
How does degradation affect biodiversity?
Habitat loss and degradation—which is any thinning, fragmentation, or destruction of an existing natural habitat—reduces or eliminates the food resources and living space for most species. Species that cannot migrate are often wiped out.
What are some examples of biodegradable?
Answer: Biodegradable materials are those which can be degraded by natural processes into some usable forms. Example- Human and animal excreta, Plant products like rubber, paper, wood, leaves, cotton, and wool, Dead remains of living organisms, Kitchen waste, Agricultural waste.