1.	Global warming

a) Background
b) Causes
c) Effects
d) Solution

2.	The ozone hole

a) Background
b) Causes
c) Effects
d) Solution

3.	Cutting down the rainforests - deforestation

a) Background
b) Causes
c) Effects
d) Solution

4.	Toxic pollution

a) Background
b) Causes
c) Effects
d) Solution

5.

Acid rain

a) Background
b) Causes
c) Effects
d) Solution

6.

Energy

"The ozone hole
Background: Scientists discovered that the ozone layer in the atmosphere over the Antarctic was missing. In other populated places such as Australia it was very thin. The ozone layer, about 30km above the Earth's surface, absorbs dangerous ultra violet (UV) radiation.
Causes: We release ozone damaging chemicals in industrial and domestic activities. Some of them destroy the ozone molecule and UV reaches the Earth's surface.
Effects: UV causes damage to the DNA of cells and various cancers can result especially after sunbathing. Sheep at high altitude in the Andes are often blinded by UV.
Solutions: Ban the use of dangerous chemicals in aerosols, refrigerators and car air conditioning."