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Chapter 5 · Class 12 Geography
Primary Activities
1 exercises3 questions solved
Exercise 5.1Fundamentals of Human Geography: Primary Activities
Q1
What are primary activities? What is the difference between subsistence farming and commercial farming?
Solution
Primary Activities:
• Primary activities are those economic activities that directly involve the extraction and use of natural resources — from the land, water, forests, and minerals.
• They form the first stage of the economic chain — producing raw materials for secondary (manufacturing) activities.
• Main primary activities: Agriculture, animal husbandry, fishing, forestry, mining.
Subsistence Farming vs. Commercial Farming:
Subsistence Farming:
• The farmer produces food primarily for the family's own consumption — with little or no surplus for sale.
• Characteristics:
- Small farm size (often less than 2 hectares).
- Low use of inputs (fertilisers, machinery, HYV seeds).
- Labour-intensive — family labour.
- Low productivity per acre and per worker.
- Practised to survive — not to profit.
• Types:
(a) Primitive Subsistence (Shifting Cultivation / Slash-and-Burn):
- Practiced in rainforest and tropical areas (Amazon, Congo, Northeast India).
- A plot is cleared by burning, farmed for 2–3 years, then abandoned to regenerate.
- Called: Jhumming (Northeast India), Milpa (Central America), Roca (Brazil), Ladang (Southeast Asia).
(b) Intensive Subsistence:
- Dense populations on small plots — especially in monsoon Asia.
- Very intensive use of land and labour — two or three crops per year on the same plot.
- Wet rice cultivation in South, Southeast, and East Asia is the classic example.
Commercial Farming:
• Farming primarily to sell produce in the market for profit.
• Characteristics:
- Large farm size.
- High use of inputs — machinery, HYV seeds, chemical fertilisers, pesticides.
- Capital-intensive rather than labour-intensive.
- High productivity per acre and per worker.
- Specialist monocultures — farms specialise in one or two crops.
• Types: Plantation agriculture (tea, coffee, rubber), mixed farming, dairy farming, grain farming (wheat belts of USA/Canada/Australia).
Q2
What is plantation agriculture? What are its characteristics and examples?
Solution
Plantation Agriculture:
• Plantation agriculture is a type of commercial farming where a single crop is grown on large estates (plantations) for export.
• It developed under colonial rule — European powers established plantations in tropical regions to grow cash crops for European markets.
Key Characteristics:
1. Large estate: Plantations cover large areas — hundreds or thousands of hectares.
2. Single crop (monoculture): One primary crop dominates — tea, coffee, rubber, sugarcane, cocoa, bananas, oil palm.
3. Capital-intensive: High investment in machinery, processing facilities, and infrastructure.
4. Market-oriented: The entire output is for sale (export).
5. Colonial legacy: Plantations were developed by European companies using local or imported cheap/slave labour.
6. Infrastructure: Plantations have their own roads, housing, schools, and processing factories.
7. Located in tropical/subtropical regions: Where climate is suitable for tropical crops.
Examples:
• Tea: Assam and Darjeeling (India), Sri Lanka, Kenya — grown on hill slopes with high rainfall.
• Coffee: Brazil (world's largest producer), Colombia, Ethiopia.
• Rubber: Malaysia, Indonesia, Thailand — hot and humid tropical climate.
• Sugarcane: Brazil, India, Cuba, Caribbean — tropical and subtropical.
• Cocoa: Ghana, Ivory Coast, Nigeria — humid equatorial Africa.
• Oil Palm: Malaysia, Indonesia — equatorial.
• Cotton: USA (historically, enslaved labour on Southern plantations).
Problems with Plantation Agriculture:
• Environmental: Deforestation (especially for palm oil in Indonesia/Malaysia).
• Social: Historical exploitation of labour; low wages for workers; land alienation of indigenous communities.
• Economic: Price volatility — single commodity exports make countries vulnerable to global commodity price swings.
• Ecological: Monocultures deplete soil and are vulnerable to pests.
Q3
What is mining? What are the factors affecting the location of mining activities?
Solution
Mining:
• Mining is the extraction of minerals and other geological materials from the Earth's crust — including metals (iron, copper, gold), fossil fuels (coal, oil, gas), and industrial minerals (limestone, gypsum).
• Mining is a primary activity that supplies raw materials to manufacturing industries.
Types of Mining:
1. Surface Mining (Open-cast / Open-pit):
• Minerals located near the surface are extracted by removing the overlying rock and soil.
• Used for: Coal (open-cast), iron ore, bauxite, copper, gold.
• Cheaper than underground mining; safer for workers; but causes significant landscape damage.
2. Underground Mining (Shaft Mining):
• Minerals deep below the surface are extracted through shafts and tunnels.
• Used for: Deep coal seams, deep gold mines (South Africa's mines are among the world's deepest).
• More expensive and hazardous than surface mining.
3. Drill Mining:
• Used for liquid and gaseous minerals — oil and natural gas are extracted through drilling.
• Offshore drilling: Oil platforms in the sea.
Factors Affecting Location of Mining Activities:
1. Geological factors:
• The location of mineral deposits is the primary determinant — you can only mine where minerals exist.
• The grade (concentration) of the mineral: Low-grade deposits may not be economically viable to mine.
2. Economic factors:
• Market price of the mineral: If the price is high enough, even low-grade or remote deposits become viable.
• Cost of extraction: Deeper or more remote deposits are more expensive to mine.
• Availability of capital and technology.
3. Infrastructure factors:
• Transport: Railways, roads, and ports needed to move heavy ores.
• Energy: Mining and processing require large amounts of electricity.
• Water: Processing minerals often requires large water supplies.
4. Labour factors:
• Availability of skilled and unskilled labour.
• Labour costs vary — some mining operations move to low-wage countries.
5. Political and regulatory factors:
• Government policies on mining licences, royalties, and environmental regulations.
• Political stability: Companies avoid investing in politically unstable regions.
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