Life

What are the causes and consequences of ozone layer depletion?

What are the causes and consequences 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 will the consequences be if the ozone hole keeps expanding?

UV rays can penetrate through water and can kill small plants and animals. If the ozone hole keeps on expanding, there would be very few plants, which means less food in the whole world.

What are the effects of ozone depletion on plants and animals?

There is concern that ozone depletion may lead to a loss of plant species and reduce the global food supply. Plants form the basis of the land food web, prevent soil erosion and water loss and are the producers of oxygen. Scientists have shown that over 100 species of plants may be sensitive to ozone depletion.

Which is not a consequence of ozone layer depletion?

1. Which of the following is not the consequence of ozone layer depletion? C. Cyanobacteria are sensitive to UV radiation and would be affected by its increase.

Why is ozone depletion a problem?

Ozone depletion is a major environmental problem because it increases the amount of ultraviolet (UV) radiation that reaches Earth’s surface, which increases the rate of skin cancer, eye cataracts, and genetic and immune system damage.

How does ozone harm the environment?

Environmental Effects Ozone damages vegetation and ecosystems by inhibiting the ability of plants to open the microscopic pores on their leaves to breathe. It interferes with the photosynthesis process by reducing the amount of carbon dioxide the plants can process and release as oxygen.

How is ozone harmful?

When inhaled, ozone can damage the lungs. Relatively low amounts of ozone can cause chest pain, coughing, shortness of breath and, throat irritation. It may also worsen chronic respiratory diseases such as asthma as well as compromise the ability of the body to fight respiratory infections.

Why is ozone being depleted?

Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere (see details below). CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone’s ultraviolet radiation-absorbing capacity.

How does ozone depletion affect climate change?

Another important linkage involves the way that ozone-depleting substances and greenhouse gases alter certain processes in the atmosphere so as to enhance both global warming and stratospheric ozone depletion. These changes result in a warming of the troposphere and a cooling of the stratosphere.