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Biological Resources Chapter 6 Biodiversity and coservation

 

Biological Resources


What are biological resources? 

A biological resource is substance or object required by an organism for normal growth, maintenance and reproduction.


Resources can be consumed by one organism and as a result become unavailable to another organism. 

For plant key resources or nutrients are sunshine, water and place to grow. 

For animals key resources are food water and territory 


Relation between biological resources and biodiversity: 

Biological diversity plays an essential role in maintaining life support systems and quality of life and provides key resources and services for the economy. Its preservation is key to a sustainable development. The indicators have shown threatened species, protected areas, forest resources and land cover. 


What are sustainable resources? Sustainable resources means resources which are never depleted and have no need to be recycled and future generation can also benefit from these. 

Renewable resources are more sustainable because they can be used again and again such as water, wind, wave energy and sun energy. 


How can we be sustainable?

We can be sustainable by following things below 

Save energy 

Use renewable energy 

Grow your own producers 

Recycle and reuse 


Sustainable use of biological resources


Sustainable use means the use of components of biological diversity in a way and at rate that does not lead to the long term decline of biological diversity, there by maintaining its potential to meet the needs and aspiration of present and future generation. 

Proper use of resources 

Use of resources as per need of future generation 

Balance between economic development and environment protection

to sustai


Population 

Poverty and inequality 

Shortage of drinking water 

Disease, mal-nutrition and lack of medical facilities 

Deforestation due to urbanization 

Rising consumption of energy and of petrol. 


Needs for sustainable use of biological resources 

Developing society 

Increased use of toxic and chemical substance 

Emerging industries 

Poverty 

Ozone layer depletion 

Depleting conditions of environment . 


What is unsustainable? 

Unsustainable refers to anything that cannot continue at its current rate this applies to the 3 P’s mentioned below


Prdit (economic) 

Planet (environmental) 

People (social) 


What are unsustainable resources?  Definition; 

Unsustainable resources are resources that will eventually run out. 

For example . 

Fossilfuels.

Agricuttural practices 


Soildegradation and erosion 

Wasteful water consumption. 

Pollution and contamination of our land, air and water. 

Land conservation and habitat loss (deforestation) 


Non-renewable resources 

Nonrenewable energy resources include coal, natural gas, oil and nuclear energy once these resources are used up, they cannot be replaced which is a major problem for humanity as well as currently dependent on them to supply most of our energy needs 


Nuclear energy 

Nuclear energy comes from nucleus of atom. It is a best source to produce electricity. 

Nuclear power plant produce electricity by using nuclear fission is when nuclei of atoms combined or split apart 

Material most often used in nuclear power plant is uranium which is found in rocks all over the world Nuclear plant used very rare type of uranium U-235. 

it is unsustainable (material used in nuclear power plant)


Nuclear energy 

Nuclear fission uses uranium to create energy which is used in production of electricity. Nuclear energy is a non renewable resource because once the uranium is used it is gone. They also produce radioactive radiations that cause serious diseases in animals. 


Fossit fuels

Fossil fuels are made from the decomposition of plants and animale These fields are found in the earth’s crust and contain carbon and hydrogen, which can be burned for energy.

Coal, oil and natural gas are examples of fossil funls 

Coal:

Coal is unsustainablo resource of onorgy that cannot be replenished for thousand or millions of years Coal comes from fossil fuele Coal is a material, usually found in sedimentary rocks deposits where rocks with dead plant and animal matter are piled up in layers More than 50% of coal weight must be : from fossilized plants As we know that fossil fiiela ara burned to create . energy and electricity. Coal contains energy stored by planta that lived hundreds of millions of years ago in swampy forents, layer of dirt and rocke cover the plants over millions of years The presaute and heat tumed plants into substance we called coal. This process takes million of years so coal is unsustainable.:

 Role: 

Support life, provides nutrients to plants, 11% of the total area of world is under cultivation. 


Misuses:

Soil erosion, poor agricultural practice, extensive grazing, leeching etc. 


          Wildlife 


Non-cultivated plants and non-domesticated animals included in wildlife.


Role: 

Provides food, maintenances of our environment, provides wood and medicinal plants, ‘ provides habitat for variety of organisms and plays key role to balance food chains. 


Misuses: 

Overhunting leads to extinction of species, overfishing leads to formation of endangered species, deforestation, urbanization etc. 

ii) Oil:

Coal and oil are formed from dead plants and animals both take thousands of years to convert into coal therefore cannot be replenished in a lifetime so it is unsustainable. Oil is originally found as a solid  material between layers of sedimentary rocks like shale. This material is heated in order to produce the thick oil that can be used to make gasoline Crude oil is found from the remains of dead organisms such as algae end zooplanktons that existed millions of years ago in a marine environment. It is nonrenewable once it's gone it's gone and cannot be easily replenished. 

ii) Natural gas:

It is usually found in pockets above oil deposits. It can also be found in sedimentary rocks layer that do not contain oil. Natural gas is primarity made up of methane. 

Renewable resources 

Resources that are used again and again are called renewable resources such as water, land, wild life and energy (hydroelectric, wind, tidal etc.)


Naturalgas 

It is usually found in pockets above oil deposit. it can also be found in sedimentary rocks layer that don’t contain oil. Natural gas is primarily made up of methane. 

Water 

About 70% of the earth is covered by water. 

It is component of air and soil . 

70 -90% in living organisms .

97% in oceans and seas . 

2% in frozen ice .

1% in lakes, streams and rivers . 

Uses: 

90% in irrigation, 10% in domestic and industrial uses, raw material of foodstuff, drinks, liquids, detergents and other product. Sodium chloride is also obtained from sea water .


Land


30% of earth is land. The upper layer of earth’s crust is called soil. Soil contains soil pasticles, soil water, soil air, inorganic and organic matters and soil organisms.

Role: 

Support life, provides nutrients to plants, 11% of the total area of world is under cultivation. 


Misuses:

Soil erosion, poor agricultural practice, extensive grazing, leeching etc. 


          Wildlife 


Non-cultivated plants and non-domesticated animals included in wildlife.


Role: 

Provides food, maintenances of our environment, provides wood and medicinal plants, ‘ provides habitat for variety of organisms and plays key role to balance food chains. 


Misuses: 

Overhunting leads to extinction of species, overfishing leads to formation of endangered species, deforestation, urbanization etc. 

Role: 

Support life, provides nutrients to plants, 11% of the total area of world is under cultivation. 


Misuses:

Soil erosion, poor agricultural practice, extensive grazing, leeching etc. 


          Wildlife 


Non-cultivated plants and non-domesticated animals included in wildlife.


Role: 

Provides food, maintenances of our environment, provides wood and medicinal plants, ‘ provides habitat for variety of organisms and plays key role to balance food chains. 


Misuses: 

Overhunting leads to extinction of species, overfishing leads to formation of endangered species, deforestation, urbanization etc. 



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