State which of the following is not an ozone-depletin:y4u,wqki6kr g substance (ODS).

  State which factor has not caused a masjw -dt djk/52/) o7c-eifqnkxs extinction in the past.

  Identify which of the following is not true about stratospherisufolu(faf)mopu akhqk w7)(0op4f31cu 7 (5 c ozone.

  Determine which of the following greenhouse gases isbbmzdc:gw1ib 532ma 7 correctly paired with its source7:miz5dgb3w b ma12b c.

  State which is not true r(0k lsn 0,5;snnrkc lxegarding greenhouse gases.

  List the main greenhousmu21 kqs w9xz,e gases.

  Figure: Variations in ozz8/f orae xh9+cl)jw 6one hole area since 1979


Describe the trends seen in the graph
I.
The mean and maximum ozone hole area start to increase from 1979.
II.
The mean ozone hole area reached a maximum somewhere between 2000 and 2010.
III.
There is a downward trend from 2015 to the present for the mean ozone hole area.
.

  Figure: Variations in ozone hole a bq;3vu05lq dhrea since 1979


Deduce why is there a downward trend in the area of the ozone hole in recent years.

  Outline how the depletion of stratospheric ozone can impact living systemme/,q;96o cxmg( pof krl u4:ws.

  Determine to which level of pollution mil5hwoj )q9:r anagement strategy each of the below strate hrl9 oqi)5w:jgies belongs.
I.
Passing legislation that regulates the amount of ozone-depleting substances (ODS) that are released into the environment.
II.
Developing technologies that will allow for the elimination of ODS from the ozone layer.
III.
Passing legislation that prohibits the use of ODS and requires the use of their alternatives.

  Describe ozone-depleting substances (ODS) and their7iu.:uck kd6bbs1i+ g(wv f;qv3r+g k effects.
I.
Ozone-depleting substances include halogenated gases like CFCs, used as propellants in aerosols and coolants for refrigerators.
II.
The ODS reach the stratosphere and release the halogens they carry. This disrupts the normal equilibrium of ozone formation and destruction, causing a decline in ozone.
III.
The stratosphere can no longer absorb enough of the UV radiation, causing the rays to reach the surface of the Earth, harming the organisms, causing eye problems and skin cancer.

  Identify the most successful action in comba8 bvg2y9sgw0 qtting the decrease in the concentration ovgy sgq 2b809wf stratospheric ozone.

  Depletion of stratosr vxh .2g,j u hemyul ,*sh(27r9xg3jvpheric ozone has affected life on Earth in many ways.
Identify which of the following is not the result of depletion of stratospheric ozone.

  Figure: ODS Emissions from 1961 to wet /)xfiwn+.2014


Outline whether the Montreal Protocol has been successful in achieving its aims.

  Figure: Ozone concentration qdbm x7(l5up5 at different altitudes


Identify the option that does not correctly describe stratospheric and tropospheric ozone.

  Figure: Stratospheric ozone concentration from 1960 to 21ej*4f blb6c/s 00

Explain the reason behind the delayed effect in ozone reformation seen in the Figure, considering that the Montreal Protocol took effect in 1989.