Environments

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4

FACTORS AFFECTING POPULATION CHANGE

Disease

This can spread quickly through a large dense population but not through a small one.

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FACTORS AFFECTING POPULATION CHANGE

Migration

Birds flying south Africa can cause a seasonal change in population.

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FACTORS AFFECTING POPULATION CHANGE

Climate change.

Changes in weather can cause change in population.

Dinosaurs may have disappeared due to this type of change.

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FACTORS AFFECTING CHANGE

Floods and Famine.

Both of these can change where people and animals will change their places of life.

Katrina

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FACTORS AFFECTING CHANGE

FAMINE

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RECYCLING

Types of Waste.

The waste in our homes includes the following.

1. Plastic

2. Metal

3. Glass

4. Paper

5. Ashes

6. Rags

7. Animal and Vegetable material.

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RECYCLING

Recycle bin

Miscellanious 19%

Paper and cardboard 30%

Plastics 9%

Glass 9%

Kitchen waste 22%

Metals 8%

Textiles 3%

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Recycling Types of Waste

Plastic comes mainly from packaging as it is strong and lightweight.Also some comes from broken toys etc.

Metal waste mainly from food and drinks cans.Also from old pots and pans.

Glass waste from bottles and other containers.Costs a lot to make from sand .

Paper comes mainly from newspapers and packaging.

Ashes from coal fires but no longer a great amount of waste because most people now have central heating.

Rags small amount of waste from old clothes.

Animal and vegetable waste from food mainly.