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. ... UV rays also affect plant growth, reducing agricultural productivity.
What do you mean by ozone layer depletion?
Ozone layer depletion means the thinning of the ozone layer present in the upper atmosphere . That is harmful to nature and the atmosphere. Ozone layer depletion is one of the major problems for the atmosphere and also for all the living beings including the flora and fauna of this earth.
What is ozone layer depletion causes and effects?
Ozone depletion is primarily caused by human activities. The main effect of ozone depletion is an increase in UV-B rays reaching the earth’s surface . ... CFCs and halons break down into chlorine and bromine which in turn destroy the ozone layer.
What is ozone layer depletion and its effects essay?
These atoms are highly reactive with ozone and disrupt the stratospheric chemistry . ... The reactions deplete ozone layer. Due to depletion of ozone layer, the Earth is exposed to the ultra-violate radiation. These rays cause harmful effect to living beings on the Earth.
What is ozone hole What are the effects of ozone depletion?
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. Ozone can be destroyed more quickly than it is naturally created.
What are the major causes of ozone layer depletion?
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) .
How do humans destroy the ozone layer?
Human activities cause the emission of halogen source gases that contain chlorine and bromine atoms . These emissions into the atmosphere ultimately lead to stratospheric ozone depletion. The source gases that con- tain only carbon, chlorine, and fluorine are called “chlo- rofluorocarbons,” usually abbreviated as CFCs.
What is ozone layer importance?
Why is Ozone Layer important? Ozone protects the Earth from harmful ultraviolet (UV) rays from the Sun . Without the Ozone layer in the atmosphere, life on Earth would be very difficult. ... With a weakening of the Ozone Layer shield, humans would be more susceptible to skin cancer, cataracts and impaired immune systems.
How can we protect the ozone layer?
- Avoid the consumption of gases dangerous to the ozone layer, due to their content or manufacturing process. ...
- Minimize the use of cars. ...
- Do not use cleaning products that are harmful to the environment and to us. ...
- Buy local products.
Which gas is destroying the ozone layer?
The main ozone-depleting gases are chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) .
What is ozone layer?
The ozone layer is the common term for the high concentration of ozone that is found in the stratosphere around 15–30km above the earth’s surface. It covers the entire planet and protects life on earth by absorbing harmful ultraviolet-B (UV-B) radiation from the sun.
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.
What is harmful for ozone layer?
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 are the effects of ozone layer depletion on the environment?
The ozone layer acts as a natural filter, absorbing most of the sun’s burning ultraviolet ( UV ) rays. Stratospheric ozone depletion leads to an increase in UV -B that reach the earth’s surface , where it can disrupt biological processes and damage a number of materials.
What causes the ozone hole?
The ozone hole has developed because people have polluted the atmosphere with chemicals containing chlorine and bromine . The primary chemicals involved are chlorofluorocarbons (CFCs for short), halons, and carbon tetrachloride. ... Once released from CFCs, chlorine (Cl) then reacts with ozone (O3) to form ClO and O2.
What are the effects of ozone layer?
Effects on Human Health
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.
