Xam idea - Science

Book: Xam idea - Science

Chapter: 16. Management of Natural Resources

Subject: Biology - Class 10th

Q. No. 17 of Proficiency Exercise

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17

List four advantages of properly managed watershed management.

Watershed management system has a lot of benefits:

•It is an integrated multi-resource management system


•It supports sustainable rivers and lakes and promotes water conservation.


•It aims at conserving soil and water to increase biomass production.


•It maintains the quality of water and helps in equal and sustainable distribution of water.


•It helps to prevent floods and droughts and reduce their effects by controlling flow of rainwater.


•It helps to prevent contamination of groundwater and rivers.


•It aims at maintaining proper ecological balance.


•This system ensures to provide safe and clean drinking water.



17

More Exercise Questions

1

“Forests are biodiversity hotspots”. Justify this statement.
2

Name the two elements which are present both in CNG and petroleum.
3

Give an example each from daily life where the household waste can be effectively used and recycled respectively.
4

What does Chipko Movement refer to?
5

What important message is conveyed by Amrita Devi Bishnoi Award for wildlife conversation?
6

List four causes of damage to forests.
7

Fossil fuels are being increasingly used as source of energy. List any two reasons for replacing them by alternate sources of energy.
8

List any two reasons due to which construction of large dams is opposed.
9

Although coal and petroleum are produced by degradation of biomass, yet we need to conserve them. Why? Mention two reasons.
10

“Narmada Bachao Aandolan” raised issues of how constructions of big dams create environmental problems. Discuss two such issues.
11

Which natural resource are the ‘biodiversity hotspots’? Suggest what happens when there is a loss of biodiversity.
12

Why is sustainable management of natural resources necessary? Why is reuse better as compared to recycle?
13

Why do you think there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
14

Why are the Arabari forests of Bengal known to be a good example of conserved forest?
15

“The prejudice against the traditional use of forest areas has no basis”. Explain.
16

Why are environmentalists insisting upon ‘sustainable natural resource management’? Give any four reasons.
17

List four advantages of properly managed watershed management.