141
Air pollution can happen naturally due, but not limited, to the following:
• Soil erosion
• Forest fire
Fig. 4.9 Dead calf thrown in a riverbed during a lean season
Box 4.1 Plastic Pollution of Ocean
Due to versatility of plastic, their uses have increased and have occupied
many aspects of life. Non-degradability and durability of plastics and buoyancy have become a threat to the environment and make them disperse over
long distances.
Recreational fishing and boats account for nearly 52% of all the solid
wastes dumped in the US waters (UNESCO 1994). In 1975, nearly 23,600 tons
of artificial packaging and 135,400 tons of plastic fishing gear and substances
were discarded into the sea by fishing boats/ships (Cawthorn 1989; DOC
1990). As per an article published by Horsman (1982), merchant ships discard
nearly 639,000 plastic containers daily across the world.
Plastic pellets were seen in non-industrial locations such as Rarotonga,
Tonga, and Fiji. In New Zealand beaches, more than 100,000 raw plastic granules/sqm were observed in 1989 (Gregory 1989).
As per the work published by Ryan and Moloney (1990), plastic trash in
South African beaches has raised in five years.
4.5 Pollution of the Environment
Air pollution can happen naturally due, but not limited, to the following:
• Soil erosion
• Forest fire
Fig. 4.9 Dead calf thrown in a riverbed during a lean season
Box 4.1 Plastic Pollution of Ocean
Due to versatility of plastic, their uses have increased and have occupied
many aspects of life. Non-degradability and durability of plastics and buoyancy have become a threat to the environment and make them disperse over
long distances.
Recreational fishing and boats account for nearly 52% of all the solid
wastes dumped in the US waters (UNESCO 1994). In 1975, nearly 23,600 tons
of artificial packaging and 135,400 tons of plastic fishing gear and substances
were discarded into the sea by fishing boats/ships (Cawthorn 1989; DOC
1990). As per an article published by Horsman (1982), merchant ships discard
nearly 639,000 plastic containers daily across the world.
Plastic pellets were seen in non-industrial locations such as Rarotonga,
Tonga, and Fiji. In New Zealand beaches, more than 100,000 raw plastic granules/sqm were observed in 1989 (Gregory 1989).
As per the work published by Ryan and Moloney (1990), plastic trash in
South African beaches has raised in five years.
4.5 Pollution of the Environment