Causes of Poor Food Supply

The Causes of Poor Food The Causes of Poor Food SupplySupply

Map of World HungerMap of World Hunger

Task: What does the map show?Task: What does the map show?

What is the problem?What is the problem? Approximately 1.2 billion Approximately 1.2 billion

people suffer frompeople suffer from under-nutrition under-nutrition (deficiency of calories (deficiency of calories and protein)and protein)

Some 2 to 3.5 billion Some 2 to 3.5 billion people suffer frompeople suffer from malnutrition malnutrition (deficiency (deficiency of vitamins and minerals)of vitamins and minerals)

Task: Write down definitions of under-nutrition and malnutrition

What are the causes of poor food What are the causes of poor food supply?supply?

Task: Put the following causes into your Venn diagram to show whether the causes

are social, economic or environmental.

Social Economic

Environmental

•PovertyPoverty•The problem is that many people don’t have enough money to buy food (more than one billion people earn less than 60p a day)

•Poor farmers find it difficult to borrow money to get over temporary difficulties such as periods of drought so end up eating animals or seeds which should be kept for next years crop.

•Land OwnershipLand Ownership

The vast majority of The vast majority of good land belongs good land belongs to a few wealthy to a few wealthy owners owners

The vast majority of The vast majority of the rural population the rural population to miserably small to miserably small parcels of the worst parcels of the worst possible farmlandpossible farmland

•Commercial FarmingCommercial Farming Examples of such land use Examples of such land use

include:include: The tobacco industry for The tobacco industry for

tobacco exportstobacco exports Tea and coffee plantations Tea and coffee plantations

for tea and coffee exportsfor tea and coffee exports Floriculture for flower Floriculture for flower

exportsexports Sugar cane growing for Sugar cane growing for

sugar exports sugar exports Beef for use in fast food Beef for use in fast food

industriesindustries

•War and ConflictWar and Conflict

War can disrupt War can disrupt farming by farming by preventing people preventing people from working on from working on the landthe land

War can also cause War can also cause problems in problems in transporting food transporting food from one area to from one area to another.another.

•Poor TransportPoor Transport

Poor infrastructure Poor infrastructure may mean food fails may mean food fails to reach remote to reach remote areas. This is a areas. This is a particular problem in particular problem in drought.drought.

•Lack of Appropriate Lack of Appropriate TechnologyTechnology

Farmers Farmers sometimes have sometimes have low crop yields due low crop yields due to a lack of advice to a lack of advice or appropriate or appropriate equipment.equipment.

•OvergrazingOvergrazing

Too many animals Too many animals on a piece of land on a piece of land leads to it leads to it becoming bare and becoming bare and soil erosion can soil erosion can then occurthen occur

•Soil ErosionSoil Erosion

Soil erosion is Soil erosion is caused by over caused by over using land. Erosion using land. Erosion results in loss of results in loss of top soil which top soil which reduces soil fertility reduces soil fertility and therefore crop and therefore crop yields.yields.

•DroughtDrought

Too little or Too little or unreliable rainfall unreliable rainfall can cause crops to can cause crops to fail.fail.

Why do some places get so Why do some places get so little precipitation?little precipitation?

•Moist winds blowing over Moist winds blowing over mountains will bring relief rainfall on mountains will bring relief rainfall on one side of the mountains but leave one side of the mountains but leave a rain shadow on the other.a rain shadow on the other.

Air blowing across Air blowing across continents continents gradually lose the gradually lose the moisture picked moisture picked up from the sea. up from the sea.

So areas of a So areas of a continent on the continent on the opposite side to opposite side to the prevailing the prevailing wind tend to be wind tend to be drier.drier.


Anticyclones Anticyclones (high pressure (high pressure systems) systems) create sinking create sinking air which is air which is warmed, which warmed, which causes water causes water moisture to moisture to evaporate evaporate from it.from it.


Causes of Poor Food Supply

Technology

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