What are the causes and effects of the depleted ozone?
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. These chemicals are found in cleaning agents, aerosols, insulating foam, and refrigerants.
What are the causes of ozone layer depletion?
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 products that damage the ozone layer?
Ozone depleting substances
- chlorofluorocarbons (CFCs)
- halons.
- carbon tetrachloride (CCl4)
- methyl chloroform (CH3CCl3)
- hydrobromofluorocarbons (HBFCs)
- hydrochlorofluorocarbons (HCFCs)
- methyl bromide (CH3Br)
- bromochloromethane (CH2BrCl)
What are the main chemicals that cause damage to the ozone layer?
This page provides information on compounds recognized as ozone-depleting substances ( ODS. ODS include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons, methyl bromide, carbon tetrachloride, hydrobromofluorocarbons, chlorobromomethane, and methyl chloroform.
What are the effects of ozone layer depletion?
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 effect of ozone?
Human Health Effects 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.
What are the 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 is damaging 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. When they break down, they release chlorine or bromine atoms, which then deplete ozone.
What are ozone depleting substances and how do they deplete the ozone layer?
Ozone depleting substances are chemicals that destroy the earth’s protective ozone layer. They include: chlorofluorocarbons (CFCs) halon.
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 the effect of ozone layer depletion?
What is the harm from the depletion 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.