Figure: Greenhouse gas emisg)s:b*6 ea (q75dltvkd.. xv n fkuhs;sions by sector



Scientists analyzed the main contributors to greenhouse gas emissions from human-related activities. The resulting data is presented in the Figure.

Identify the contributor that is most responsible for the production and release of methane and nitrogen oxides into the atmosphere.

  Identify the chemical that is a major contributor to photochemical smow p 3lm,jkes-6g.

  Particulates are produced during the a, kb3m lqw.i.combustion of fossil fuels and emitted into the atmosphere. PM2.5 refers to the diameter of the particu .m.,k3walibq late matter.
State which unit of measurement is referred to by PM2.5.

  Figure: An urban envih3 0 )*yno,che9clttl2 f,nxv5) osd dronment


Deduce the name of the process explained in the Figure.

  Identify which of the following factors contribute to the frequenr0jawlu 5q fruj:5x)6cy and severity of smoua0xfj w rj5) u56rl:qg.
I.
Local topography (the shape of the land)
II.
Climate
III.
Population density
IV.
The amount of fossil fuels used

  Nutrients are constantly clqcm;h4dk-4, lu;p lfycled in ecosystems, including in the atmosphere as a gaseol4cuplm dlf,q;;4 -khus form.

State which element is not found in the atmosphere.

  Determine which of the following greenhouse gases is correctvqupy3z qi6-1 ly paired with its sourczq1- yquv3 6ipe.

  Figure: Causes and effects of a8q/,bvh 0myyktio,q9q34:rm ixj +guir pollution

State, according to the Figure, which of the following is the largest contributor to air pollution:

  Deduce which of the following would not be considered a pollution mvn / c/ l/j5dnzu fjvjn,n,z1*anagement strategy to regulate and reduce the pollutants causing smog and overall air pollution and n5lj c1v n/*/,vzu/zf jjn,t the point of emission.

  List the main greenhuwf0)e(5 nd huouse gases.

  State what photochemical smog is a m5 7a2glo iiep1ddvt:/m1w v3yixture of.

  Identify the statement(stp 58w 5fju8ro) that are not true about primary pollutants.
I.
Released directly from a source into the environment
II.
Usually more toxic than secondary pollutants
III.
Formed when pollutants combine under certain environmental conditions

  Predict the combination of factors thatda / y**v3zlzt would most likely lead to the formation of photochemica lzztv*yd3/* al smog.

  Figure: Standards for PM10 air pollutu*3j mgs:e+jwo x-hj zvl)k o:l)up+*ants
WHO /$\mu$gm EU /$\mu$gm USA $\mu$gm
-3 -3 -3
24hours 24hours 24hours
−1 −1 −1
45 50 50

Calculate the percentage difference between the WHO guideline standards and the USA standards.

  Figure: Causes and effects of air8 g d)zv(udka) pollution

Identify the two chemicals shown in the Figure that are also significant causes of the greenhouse effect and climate change.