HISTORY
HISTORY OF THE MIDDLE EAST
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
Oil
|
|
Wood
|
|
Either A or B
|
|
None of the above
|
Detailed explanation-1: -Trees regenerate. Trees are a sustainable, renewable resource for future generations when carefully managed. Wood really is the ultimate renewable. A sophisticated alternative to other materials that use more carbon in their production.
Detailed explanation-2: -It is obtained by cutting trees. A new plant sapling usually takes more than 15 years to grow and mature into a tree. Therefore, replenishment of cut down trees takes a very long time.
Detailed explanation-3: -Wood is technically renewable; trees that have been cut down can be replaced with new trees. However, to be truly renewable, a resource must be replaced within the same timescale it is being used up – otherwise its reserves will be reduced.
Detailed explanation-4: -Sunlight and wind, for example, are such sources that are constantly being replenished. Renewable energy sources are plentiful and all around us. Fossil fuels-coal, oil and gas-on the other hand, are non-renewable resources that take hundreds of millions of years to form.
Detailed explanation-5: -Plants have a tendency to regrow within a specific time limit to regenerate the woods. It comes under the category of continuous resource. As we see from the above table, all the properties of woods are common with renewable sources. Hence it is a renewable source in nature.