How would these advantages differ from the advantages of using a long-term perspective in managing our resources?
Management of our natural resources by using short term aims are different from the long term perspective.
Short- terms aims aims gave the advantage that our present generation will be able to meet the requirements and the rate of growth at the faster and the immediate rate. It also helps in the growth at the faster rate of economy as well. It only fulfils the current demand. They use very unlimited amount of natural resources that’s why they are not able to meet the future generation requirements. This short- term perspective does not provide the discovery of the new things or the new discoveries because they grow at very faster rate and exploit at very faster rate.
On the other hand, long term perspective gave the advantage that the uses or management of natural resources occurs in that way that with our present generation, future generation basic needs also get fulfilled also known as sustainable use of the resources. It fulfils the current and the future generation demands. They use very limited amount of natural resources that’s why they are able to meet the future generation requirements as well. Unlike short- term perspective, the long- term perspective provides more time for the new discoveries or for the new technologies or sustainable energy sources etc.
That’s why we should use long- ranging aims so that basic needs could be used by present generation as well as the future generation.
Find out about the traditional systems of water harvesting/management in your region.
Suggest some approaches towards the conservation of forests.
We saw in this chapter that there are four main stakeholders when it comes to forests and wildlife. Which among these should have the authority to decide the management of forest produce? Why do you think so?
List five things you have done over the last one week to —
(a) conserve our natural resources.
(b) increase the pressure on our natural resources.
Find out the source of water in your region/locality. Is water from this source available to all people living in that area?
How can you as an individual contribute or make a difference to the management of (a) forests and wildlife, (b) water resources and (c) coal and petroleum?
Why should we conserve forests and wildlife?
Compare the above system with the probable systems in hilly/mountainous areas or plains or plateau regions.
What changes can you make in your habits to become more environment-friendly?
What can you as an individual do to reduce your consumption of the various natural resources?
Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.
What is a good source of energy?
Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?
What are trophic levels? Give an example of a food chain and state the different trophic levels in it.
What is the difference between a reflex action and walking?
What is the importance of DNA copying in reproduction?
If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier?
Why should a magnesium ribbon be cleared before burning in air?
Define the principal focus of a concave mirror.
You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
What are fossils? What do they tell us about the process of evolution?
In evolutionary terms, can we say which among bacteria, spiders, fish and chimpanzees have a ‘better’ body design? Why or why not?
A concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens? Draw the ray diagram.
Why is DNA copying an essential part of the process of reproduction?
State the principle of an electric generator.
Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.
An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be –
(a) 100 W (b) 75 W (c) 50 W (d) 25 W
Element X forms a chloride with the formula XCl2, which is a solid with a high melting point. X would most likely be in the same group of the Periodic Table as
(a) Na (b) Mg (c) AI (d) Si
How is the concentration of hydroxide ions (OH-) affected when excess base is dissolved in a solution of sodium hydroxide?
Only variations that confer an advantage to an individual organism will survive in a population. Do you agree with this statement? Why or why not?