State which of the following is not an ozone-depletinys/i)4slr, e w 37 0xcvrxxpvwtyo 2:.g substance (ODS).

  State which factor has not caused a mass exti.n gecnpzr -3ou px+mlvw5 9.3nction in the past.

  Identify which of the following is not true about stratospheric ozone.tp xj; hz *0yfi8mgj)v, wko07

  Determine which of the following greenl 0uv4k4/lpi3 upy u7zhouse gases is correctly paired with its source.4uuv yp07zk /lpui 34l

  State which is not true regardi/5wr.mcv (kx z4fnoj: ng greenhouse gases.

  List the main greenhouse wbz0 7ieas9a.*o, 3gko vc1wzx8ro6r gases.

  Figure: Variations in ozone hom.jg: uss3gz lh)7z h,le 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 area sincyt3m; d mn+i+wb tyjf na)(;*ce 1979


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

  Outline how the depletily)3hnbb1bq0e4 e7l5 xg9yugon of stratospheric ozone can impact living systems.

  Determine to which level of pollution managc.oxglksy3 gm 7k4.c 2ement strategy each of the below strate7cm4. x.32sokglc gy kgies 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 their effectgxk :i;/j; 6sgk- kn*p6rdey us.
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 succeywmh ;wj(oh+ (-h5 1m mwkdft-ssful action in combatting the decrease in the concentration of strkf (h5d;w1h m- +om-y twmwhj(atospheric ozone.

  Depletion of stratospheric ozone has affected lih c4/nlw l7t(gng : :oye8kq7rfe 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 2014 9)2ckuk 0lpagjce61f


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

  Figure: Ozone concentration at different altitu2yaivua+ zryv1.:+ yx des


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

  Figure: Stratospheric ozone concentratio(bxtvm4p 7o(k n from 1960 to 2100

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