Ozone layer depletion causes
increased UV radiation levels
at the Earth’s surface, which is damaging to human health. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders.
What is ozone layer depletion causes and effects?
The main effect of ozone depletion is an increase in UV-B rays reaching the earth’s surface. Causes :
chlorofluorocarbon (CFCs), halons, and other compounds deplete the ozone layer
. … CFCs and halons break down into chlorine and bromine which in turn destroy the ozone layer.
What are three effects of ozone depletion on plants?
Ozone causes considerable damage to plants around the world, including agricultural crops and plants in natural ecosystems. Ozone
damages plants by entering leaf openings called stomata and oxidizing (burning) plant tissue during respiration
. This damages the plant leaves and causes reduced survival.
What are the harmful effects of ozone depletion Class 10?
Harmful effects of ozone depletion are: (i)
It can cause skin cancer
. (ii) It damages the eyes by causing the eye disease called cataract. (iii) It damages the immune system by lowering the body’s resistance to diseases.
How ozone is depleted discuss the effects of ozone depletion?
Ozone layer depletion
increases the amount of UVB that reaches the Earth’s surface
. Laboratory and epidemiological studies demonstrate that UVB causes non-melanoma skin cancer and plays a major role in malignant melanoma development.
What is the effect of ozone?
Breathing ground-level ozone can trigger a variety of health problems including
chest pain, coughing, throat irritation
, and congestion. It can worsen bronchitis, emphysema, and asthma. Ozone also can reduce lung function and inflame the lining of the lungs. Repeated exposure may permanently scar lung tissue.
How ozone layer affect the ecosystem?
The effects of ozone on individual plants can then have negative impacts on ecosystems, including:
loss of species diversity
(less variety of plants, animals, insects, and fish) changes to the specific assortment of plants present in a forest. changes to habitat quality.
How the ozone layer is depleted?
Chlorofluorocarbons or CFCs are the main cause of ozone layer depletion. These are released by solvents, spray aerosols, refrigerators, air-conditioners, etc. The molecules of chlorofluorocarbons in the stratosphere are broken down by
the ultraviolet radiations and release chlorine atoms
.
What are 3 causes of depletion to the ozone layer?
The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially
manufactured halocarbon refrigerants, solvents, propellants, and foam- blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons)
.
What is the harm from the depletion of earth’s ozone layer Mcq?
Today Ozone Layer is getting depleted due to the use of
chemicals by the industries mainly chlorofluorocarbons (CFCs)
. This depletion has threatened life on earth like increased skin cancer in humans and other environmental problems.
How does the ozone layer affect life on Earth quizlet?
How does the absorption of
ultraviolet radiation
by the ozone layer help sustain life? a. This process helps maintain the temperature of the Earth. … It keeps a low level of harmful ultraviolet radiation from reaching living organisms.
How does ozone depletion affect climate change?
Ozone depletion and climate change are linked in a number of ways, but ozone depletion is not a major cause of climate change. Atmospheric ozone has two effects on the temperature balance of the Earth. … It also absorbs
infrared radiation
emitted by the Earth’s surface, effectively trapping heat in the troposphere.
What affects the ozone layer?
Scientists also discovered that the thinning in the ozone layer was caused by increasing concentrations of ozone-depleting chemicals –
chlorofluorocarbons
or CFCs (compounds with chlorine and/or fluorine attached to carbon) and to a lesser extent halons (similar compounds with bromine or iodine).
Why is depletion of ozone layer a cause of concern?
The depletion of the ozone layer
causes more UV radiation to reach the Earth
and thus it is a cause of concern. … Depletion of ozone layer will expose us to ultraviolet radiation which are very harmful to the organism and cause skin cancer and eye damage in human beings.
How do CFCs destroy ozone?
Once in the atmosphere, CFCs drift slowly upward to the stratosphere, where they are broken up by
ultraviolet radiation
, releasing chlorine atoms, which are able to destroy ozone molecules.
Which one of the following is a result of ozone layer depletion?
Which one of the following is a result of ozone layer depletion? Explanation: The destruction of the ozone
layer causes harm to positive vegetation and to plankton
and accordingly affecting nature’s food chains and food webs. This in turn causes an increase in carbon dioxide due to the decrease in vegetation.
Which gases damage the ozone layer Mcq?
Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons
destroy the earth’s protective ozone layer, which shields the earth from harmful ultraviolet (UV-B) rays generated from the sun. CFCs and HCFCs also warm the lower atmosphere of the earth, changing global climate.
What depletes the ozone layer and what are the health effects of ozone layer depletion quizlet?
Depletion of the ozone layer has consequences on humans, animals and plants. … When CFCs reach the stratosphere, the
ultraviolet radiation from the sun causes them to break apart and release chlorine atoms
which react with ozone, starting chemical cycles of ozone destruction that deplete the ozone layer.
Which of the following does not deplete ozone layer?
HFCs
, which contain no chlorine or bromine, do not contribute at all to ozone depletion although they are potent greenhouse gases. The best known of these compounds is probably HFC-134a (R-134a), which in the United States has largely replaced CFC-12 (R-12) in automobile air conditioners.
Which gas is destroying the ozone layer?
Ozone Depletion. When
chlorine and bromine atoms
come into contact with ozone in the stratosphere, they destroy ozone molecules. One chlorine atom can destroy over 100,000 ozone molecules before it is removed from the stratosphere.
Where is ozone depletion The worst?
Overall, ozone depletion increases with latitude with low levels of depletion at the equator and tropics, and highest depletion at the poles. Although depletion has occurred over both the Antarctic and Artic poles,
Antarctica
has experienced the most severe development of the ‘ozone hole’.
What is the main problem caused by the ozone hole quizlet?
radiation. A diminished ozone layer allows more UV radiation to reach the Earth’s surface. For people, overexposure to UV rays can lead to
skin cancer
, cataracts, and weakened immune systems.
What is ozone layer Why is damage to the ozone layer a cause for concern What steps are being taken to limit this damage?
The depletion of ozone causes the harmful UV rays to reach the earth and this has resulted in increased incidence of skin cancers in humans. UV rays may also cause genetic mutations in living organisms. To limit the damage to the ozone layer,
the release of CFCs into the atmosphere must be reduced
.
What is ozone How does it affect any ecosystem Why is damage to the ozone layer a cause for concern What steps are being taken to limit this damage?
What steps are being taken to limit this damage ? Answer: The damage to the ozone layer is a cause for concern because
if the ozone layer in the atmosphere disappears completely, then all the extremely harmful ultraviolet radiations coming from the sun would reach the earth
.
