1. The thinning of the ozone layer is an environmental issue which is always being discussed. Describe the effect of the thinning of the ozone layer on the environment and living organisms on the earth. Suggest different ways to solve this problem.
[10marks]
Suggested Answer: (ANy 10 marks)
The effect:
P1 - More UV rays / ultraviolet radiation reaches the earth’s surface.
P2 - Increase of temperature.
P3 - UV ray will deteriorate one’s body immunity system.
P4 - An increase in the number of people suffering from skin cancer and cataract.
P5 - High UV rays destroy microorganisms and phytoplankton (the producer of marine food chain).
P6 - Rate of photosynthesis decrease.
P7 - High level of UV rays can damage the eggs of certain amphibians.
Steps to solve the problem:
P8 - Reduce / stop using CFCs.
P9 - Replace CFCs with HCFCs.
P10- Use wrapping papers instead of polystyrene boxes.
P11- Patch up the holes in the ozone layer by firing frozen ozone balls into the atmosphere.
teacher,
ReplyDeletei'm very confused between greenhouse effect and global warming.can u explain the differences?
Global warming, a warming of the Earth's surface and lower atmosphere, is believed to be the result of a the greenhouse effect mostly due to human-produced increases in atmospheric greenhouse gases.Please read my posting about that :-)
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