,Pollution
caused by plastics
• Plastics are non-biodegradable and cannot be decomposed by
bacteria in the environment.
• Plastic objects accumulate and pollute the environment.
• Plastics are carbon-based polymers which burn easily to
release toxic fumes.
Natural
Polymers
• Natural polymers are important substances found in all
plants, animals and food.
• Food is made up of 3 types of polymers:
– Proteins needed for growth
– Carbohydrate which provide the body with energy
– Fats which also provide the body with energy.
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