Figure: Greenhouse gas emissions bj . s 24dv7pd-oh9 rocpsnqq-0y 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 s4 yq.i1-mokgc*7zmbu r n*+p-1ejor omog.

  Particulates are produced during the combustion of fossilg3:x :ms8(hje +gnl kc fuels and emitted into the atmosphere. PM2.5 refers tmg+ : x: k3slenc(j8hgo the diameter of the particulate matter.
State which unit of measurement is referred to by PM2.5.

  Figure: An urban environmentsojb.* q(-)mxd) , m+h ldavgy


Deduce the name of the process explained in the Figure.

  Identify which of the following factors contribute to the f6f8; i ign:v9h*(vsmgv9 kzyyrequency and severity of smog. yinv9 9sf6ky : 8mh vi(z;vgg*
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 the atmosphere9bg fcnmec h w(v3*3fa l1ad3; as a ga*l 3a;gc m bwecfdv9(nf ha133seous form.

State which element is not found in the atmosphere.

  Determine which of the following greenhouse gases is correcssqe/-( l:: pu-8zs gvntcts9tly paired with its sourgspv ue-tl-:sz9(s nqst/8c:ce.

  Figure: Causes and effects of air pqh ttqnggqr /s;((*9g ollution

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 pollut+9rohod29d egion management strategy to regulate and reduce the pollutants causing smog and overall air pollution at the point of emissiod2oh drg99e+ on.

  List the main greenho18bn,8n5 zwkgd3o 5c0acm whluse gases.

  State what photochemical smog is a miuhsrkx a y*32+ykchxj /t9s l .i*6-1glm vsj9xture of.

  Identify the statement(s) that are *i ;vitoa1a7 snot 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 factul k0drx8w/ - lyc/df)ors that would most likely lead to the formation of ph ylx-/ddl0rw) fkc/u8otochemical smog.

  Figure: Standards for PM10 air pol ;ds-cm1b,: (agzy ybplutants
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 pollutio9zxb wi1w/6 kzn

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