English

Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage? - Science

Advertisements
Advertisements

Question

Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage?

Answer in Brief

Solution 1

  1. The damage to the ozone layer is a cause for concern because:
    • It causes skin darkening, skin cancer, aging, and corneal cataracts in human beings.
    • It can result in many phytoplankton deaths, leading to increased global warming.
  2. To limit the damage to the ozone layer, the release of CFCs into the atmosphere must be reduced. CFCs used as refrigerants and in fire extinguishers should be replaced with environmentally safe alternatives. Also, the release of CFCs through industrial activities should be controlled.
shaalaa.com

Solution 2

  1. The ozone layer is a protective shield around the earth. It prevents harmful ultraviolet radiation from the sun from reaching the earth. Air pollutants, like chlorofluorocarbons (CFCs), are causing the depletion of the ozone layer. This is allowing a greater amount of UV radiation to reach the earth. Free web support in education 4 upsets the ecosystem by affecting photosynthesis in plants, destroying plankton and decomposers. In human beings, UV radiation may cause skin cancer, cataracts of the eyes, and damage to the immune system.
  2. Several developed, as well as developing nations in the world have agreed to sign and obey the directions of the TINEP (United Nations Environment Programme) to freeze the production of CFCs or to limit their production to some extent.
shaalaa.com
  Is there an error in this question or solution?
Chapter 15: Our Environment - Exercises [Page 265]

APPEARS IN

NCERT Science [English] Class 10
Chapter 15 Our Environment
Exercises | Q 9 | Page 265

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

How depletion of the ozone layer affect living organisms?


Name the group of chemical compounds which damages the ozone layer.


What is UNEP?


The gas A is used by most of the animals to obtain energy from food by the process of respiration. When A is acted upon by radiation X, it gets converted into another gas B which is an allotrope of A but poisonous when inhaled. B forms a kind of layer C in the upper atmosphere which absorbs radiations X coming from a source Y and prevent them from reaching the earth. Some chemicals Z released from the various devices on the earth are destroying the layer C slowly. In fact, a hole has already been formed in layer C over the area D of the earth.
(a) What are gases (i) A, and (ii) B? Write their molecular formulae.
(b) Name the layer C.
(c) What are (i) X, (ii) Y, and (iii) Z?
(d) Name the area D.
(e) Name any two human ailments which may be caused by X.


 “Damage to the ozone layer is a cause of concern”. Justify this statement.


Explain what is smog. Give its effects.


Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?


‘There is a hole in the ozone layer’. What do you understand by this?


Is ozone depletion related to global warming?


What is the difference between stratospheric and ground level ozone?


Select the correct answer from the following statement:

The gas which in presence of U.V. light gives two atoms of the same gas.


Give balanced equation for the following conversion [one or two steps].

A molecule of ozone to two molecules of oxygen gas.


Name or state the following:

An atmospheric pollutant responsible for both global warming and ozone depletion.


Name or state the following:

The atom which reacts with oxygen to form ozone.


The problem caused due to ozone hole is ______.


Global warming is a phenomenon related to ______.


A motor car, with its glass totally closed, is parked directly under the sun. The inside temperature of the car rises very high. Explain why?


Depletion of ozone is mainly due to


In 1987, an agreement was formulated by the United Nations Environment Programme (UNEP) to freeze the production of “X” to prevent the depletion of “Y”. “X” and “Y” respectively referred to here are ______.


What is exactly measured in Dobson units or DU?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×