Depletion of the ozone layer could have drastic effects on plankton and other small marine organisms at the base of the ocean food chain. ... The increase in UV radiation threatens growth and survival of the tiny creatures that provide the original food source for the rest of the ocean food chain.
Does ozone depletion affect phytoplankton?
A major loss in primary biomass productivity may have significant consequences for the intricate food web in aquatic ecosystems and affect food productivity. It has been estimated that a 16% ozone depletion could result in a 5% loss in phytoplankton , which equals a loss of about 7 million tons of fish per year.
How does lack of ozone impact phytoplankton?
Scientists have demonstrated a direct reduction in phytoplankton production due to ozone depletion-related increases in UVB . UVB radiation has been found to cause damage to early developmental stages of fish, shrimp, crab, amphibians, and other marine animals.
How does ozone depletion affect the geosphere?
Ozone layer depletion causes increased UV radiation levels at the Earth’s surface , which is damaging to human health. ... UV radiation also affects terrestrial and aquatic ecosystems, altering growth, food chains and biochemical cycles.
How does ozone depletion affect aquatic life?
Marine ecosystems show considerable evidence that continued depletion of ozone will lead to increased penetration of UV into the upper layers of the ocean , resulting in damage to various forms of marine life such as phytoplankton, the single-celled organisms at the base of the marine food web.
What are 3 causes of depletion to the ozone layer?
Chlorofluorocarbons
What is the main reason for ozone depletion Mcq?
Manufactured chemicals, precisely manufactured halocarbon solvents, refrigerants, foam-blowing agents, and propellants are the ozone-depleting substances or ODS, known to be the main cause of depletion of the ozone layer.
What are 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.
Does UV light destroy ozone?
Ozone residuals are destroyed at UV light wavelengths ranging from 250 to 260 nm, while microorganism inactivation can be achieved at UV wavelengths ranging from 100 to 400 nm, although a wavelength of 254 nm is most effective.
What are the causes and effects of ozone depletion?
The main effect of ozone depletion is an increase in UV-B rays reaching the earth’s surface. Causes : chlorofluorocarbon
How does ozone depletion affect human life?
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.
Why ozone layer is important for human life describe?
The ozone layer is a natural layer of gas in the upper atmosphere which protects humans and other living things from the harmful ultraviolet (UV) rays of the sun .
What happens if ozone layer is destroyed?
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. Increased UV can also lead to reduced crop yield and disruptions in the marine food chain.
Which chemicals are responsible for the depletion of ozone layer?
Ozone depleting substances are chemicals that destroy the earth’s protective ozone layer. They include: chlorofluorocarbons (CFCs) halons .
Which gas is destroying the ozone layer?
Ozone depleting substances are chemicals that destroy the earth’s protective ozone layer. They include: chlorofluorocarbons (CFCs) halon .
