Advertisements
Advertisements
Question
What is a natural resource? Name three important natural resources.
Solution
Natural resources are the things present in the environment that can be used by humans. Three important natural resources are water, fossil fuels, like coal and petroleum, and forest and wildlife.
APPEARS IN
RELATED QUESTIONS
List two main causes of the pollution of water of the river Ganga. State how pollution and contamination of river water prove harmful for the health of the people of neighbouring areas.
Write one negative effect of affluent lifestyle of few persons on the environment.
Everyone of us can do something to reduce our personal consumption of various natural resources. List four such activities based on 3-R approach.
What are the different ways in which water gets contaminated?
Why does the increased level of nutrients in the water affect the survival of aquatic organisms?
Why is forest considered a natural ecosystem?
State whether the following statement is true or false :
Chipko Andolan was associated with the conservation of wild animals such as tigers and lions.
Write a short note on 'Chipko Andolan' (Hug the Trees Movement).
In a village, farmers started cultivating crops all around a lake which was always filled with water. They added lot of materials W to the soil in their fields to increase the yield of crops. Soon they found that the whole surface of water in the lake was covered with a green layer made up of tiny organisms X. After some time, the fish present in the lake started dying in large numbers because they could not get sufficient Y due to a process Z which had occurred in lake water and drained out all the Y present in the water of lake.
(a) What do you think materials W are?
(b) Name (i) X, and (ii) Y.
(c) What is the process Z known as?
(d) What happens during the process Z which uses up all the Y present in lake water?
(e) What does this example tell us about the use of materials like W?
Suggest some approaches towards the conservation of forests.
