Question

B. Answer briefly:
1. Where is the ozone hole?
2. Which gas is mainly responsible for ozone
layer depletion?
3. Mention two effects of global warming.
4. What are two reasons for the increase in
greenhouse gases?​

Answer 1

1))Antarctica

2)) chlorofluorocarbon

3))Global warming stresses ecosystems through temperature rises, water shortages, increased fire threats, drought, weed and pest invasions, intense storm damage and salt invasion, just to name a few.

4))The most important of these is the burning of fossil fuels. Fossil fuels contain carbon, and when they are burnt this carbon combines with oxygen in the atmosphere to form carbon dioxide. Changes in land use are also important sources of greenhouse gas emissions.

Answer 2

Answer:

1.Antarctica

2.chlorofluorocarbons (CFCs) gas

3. •More frequent and severe weather. Higher temperatures are worsening many types of disasters, including storms, heat waves, floods, and droughts. ...

•Higher death rates. ...

•Dirtier air. ...

•Higher wildlife extinction rates. ...

•More acidic oceans. ...

•Higher sea levels.

4.Sources of greenhouse gases

Some greenhouse gases, like methane, are produced through agricultural practices, including livestock manure. Others, like CO2, largely result from natural processes like respiration and from the burning of fossil fuels like coal, oil and gas