NATURAL RESOURCES

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what are Natural Resources?• Natural resources occur naturally with in

environments.• Natural resource is often characterized by amounts

of biodiversity and geo diversity existent in various ecosystems.

• Any material which is part of earth and satisfy human need and add value is called as resource .

Example: rocks ,mainerals, soil, rivers, plants and animal.

• Human is a resource because devolping his skill, he can devolop other resource by adding value to the physical material.

Values of Natural Resources• Economic Value :- Production of things from natural

resources• Legal Value :- Clean air, Fresh water, Healthy animal and

human beings• Aesthetic Value :- Beauty of village roads, ponds and

their agriculture fields

Types of Natural Resources

Uses of Natural Resources

Major problems with Natural Resource Conservation

• Low awarness of conservation of natural resources• Exploitation of living natural resources for economic gain• Values and Knowledge about the species and ecosystem in

adequately known• Unplanned urbanization and Uncontroled industralization

Major Natural Resource threats• Habitat destruction• Extension of agriculture• filling up of wetlands• coversion of rich bio-diversity site for human settlement an industrial devolopment• uncontrolled comerical exploitation

Ten countries with largest forest areas (million hacteres)

Minerals• Minerals are naturally occurring in inorganic crystalline

solids having a definite chemical.

• An ore is a mineral or combination of mineral from which a usefull substance, such as a metal, can extracted and used to manfacture a usefull products

Minerals are formed over a period of millions of year in earth's crust

Food Resources

CROPLANDS : that provide 76 % of the total , mostly grains.RANGELANDS : that produce meat mostly from grazing livestock, accounting for about 17% of the total food.FISHERIES : That supply the remaining 7 per cent

Food comes from the three sources

World Food Problem1) NATURAL DISASTERS : Climate change is having an increased impact on food production as

droughts and flooding become more frequent and more severe. Shrinking access to fertile land and water may trigger refugee crises and conflicts.

2) POVERTY : Ultimately, the main reason why most people are unable to feed themselves is not that food is unavailable but they cannot afford it.

But poverty also reduces food output. Many African farmers produce small harvests because they lack irrigation and fertilisers.

3) Example : Africa has the lowest fertiliser usage in the world – a measure of how its farmers are simply unable to afford the inputs used by their developed world counterparts.

4) GLOBAL FOOD PRICES : Rising global food prices affect people's ability to buy enough to feed their families., especially the urban poor, who can spend as much as 80 percent of their income on food.

• In 2007 and 2008, the global price of basics like rice, wheat and maize soared, triggering riots in many countries.

5) Uncontrolled Population : “the balance of production and consumption” of foodstuffs is also a problem. On Oct 31st 2011, the world population grows up to 7 billion. So, if the world population grows up in current pace, the amount of production of cereal crops is said to be unable to catch up with the population in the future.

Energy• Energy-the ability to do work.

• Because work and energy are so closely related, they are expressed in the same units. JOULES (J)

• When a given amount of work is done, the same amount of energy is involved.

What is Energy?

That which helps in doing work is Energy

Forms of Energy

Mechanical Energy

Sound Energy

Electrical Energy

Thermal Energy

Light Energy