OZONE DEPLETION

DESCRIPTION

• Two events usually referred to About 4% depletion per decade of stratosphere
• The most pronounced is in lower stratosphere
• Or springtime depletion over the polar regions

CAUSES

• Caused by ozone-depleting substances (ODS)
• Main ones are chlorine and bromine
• Chemicals environmentally friendly in lower atmosphere
• Released by uv rays from compounds in stratosphere
• One chlorine can break apart 1000's of ozone molecules

EFFECTS OF THE BIOSHERE

• Aquatic: Harm on phytoplankton and larvae from UVA are of particular concern.
• Plankton play an important role in the food chain.
• Crops: Ozone depletion damages crops, aquatic organisms and increases ground-level smog,
• Humans: Higher UVA also effects humans. skin cancer, cataracts, and declining of the human immune system
• Certain types of fish lay eggs weak to uv

HOW CAN WE PREVENT THIS

• Not using chemicals like CFC.
• Lowering CO2 emissions
• Driving less
• Keeping your house thermostat consistent
• Reducing the use of aerosols.