Figure: Greenhouse gas .ftfe8wyiur0y2j-x: emissions 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 contributorf)x zk4jo/*mv(7qhfs to photochemical smog.

  Particulates are produced during the combustion of foss1 g*kcjp 5d+yr 1rh)ag9g mxf.il fuels and emitted into the atmosphere. PM2.5 refers to the diameter of the particularp5 f+1m1)*gxd9jhk y.g gcrate matter.
State which unit of measurement is referred to by PM2.5.

  Figure: An urban environ ph8 mcxh7f4hb) qr+8kment


Deduce the name of the process explained in the Figure.

  Identify which of the following facto 3dbztvdrf cxl20(tq57mqalbt (595yrs contribute to the frequency and severity of ymvq57tc l3 qd5zdlftt(a0rb( 5b x92smog.
I.
Local topography (the shape of the land)
II.
Climate
III.
Population density
IV.
The amount of fossil fuels used

  Nutrients are constantly cycled in ecosystems, including in t0xf( r81125zd6yfzkx :t lc spwkiv7ohe atmosphere as a gase5prlo27dfzx 1k86 z1x fysk:i( tcvw0ous form.

State which element is not found in the atmosphere.

  Determine which of the following greenhouse gases aqd2 x cp* u:t6bax+vdp 22b+ris correctly paired with its sourr pq*a: d+ub+ a2xpdx2c2vt6bce.

  Figure: Causes and effects of air pollutiondyc3 3 te*lugrn8qo( c0 s+-qp.qa-qu

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 js1/x fftyr)6pollution management strategy to regulate and reduce the pollutants causing smog and overall air po rf/x) tyfjs61llution at the point of emission.

  List the main greenhouse gasnr3q 5/k emzn)es.

  State what photochemical smog is 7e*;tyrm:;ccdb*z cvc7 a+z;f.q v r fa mixture of.

  Identify the statement(s) that are not true about primary pollutantd* 9i,, kjbhv0ajb n6f d()huds.
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 factorsapdvwu28 a60f that would most likely lead to the formation of photochemic v620u8dawaf pal smog.

  Figure: Standards for PM10 air pollu2zb.l:vh s c8ip7; -.bz+r1qjhlhv9 spmf8g qtants
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 air pollutionn0bkpx oc /t4 1gjal37

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