State which of the folloq1 z*a:a-e(djm th y-owing is not a greenhouse gas.

  State the layer of the atmosphere inrfmt k 0t/-rn( which clouds form.

  Figure: Levels of oxygen epofx- a ;+m)qin Earth’s atmosphere


The Figure shows the maximum and minimum estimates for the oxygen concentration in Earth’s atmosphere since life began on our planet.

Calculate the difference between the maximum estimated oxygen concentration in the atmosphere and the current concentration.

  Nutrients are constantly cycled in ecosystems, includ4xthb*s qz+k:0 3zk .y 1 cspye3rqfj1ing in the atmosphere as a gaseousbhzk04 y pt3fq+ss*c1ykejrx3. q :z 1 form.

State which element is not found in the atmosphere.

  Determine which of the following greenhouse gases is correctuetz uq ).i8o3p) zsk4ly paired with its sozq e )4ou8sitp3 zu.k)urce.

  State which is not true regarding greenhouse gai i ska;2yv *+fu8zgtc 4qb(:eses.

  List the main greenhouse gaset -cx,p0wn;sh uv s:h7s.

  Identify the pie chart tvn /b;z):rz / qqmyc53dwrt1x hat most accurately represents the composition of the atmy/ z rx3z1w: qrb5cq)/dm;n tvosphere.

  Determine which of the following statement6/, +,ak ssn uvx/t aa2tfj 84oueiia,s is not true.

  Figure: Levels of oxygen a;.m jwjc0;z din Earth’s atmosphere

The Figure shows the maximum and minimum estimates for the oxygen concentration in Earth’s atmosphere since life began on our planet.
Suggest possible lines of evidence for the data in this graph.

I.
Red iron oxide layers in ancient rocks, showing oxygen caused iron in the oceans to rust
II.
The composition of air bubbles trapped in salt crystals
III.
Models that predict how much oxygen was needed in the atmosphere to support fossilised organisms

  Figure - Layers of thjj-aba +p tb7.qu1ux1 e atmosphere

Using the figure, identify the altitude range and layer of the ozone layer.

  Figure - Layers of the atmospm(5+secwsz7 * 4hdmy+id f0odhere

Use the figure to calculate the change in temperature as you go up from the Earth’s surface to the top of the troposphere.

  State which of the following statemef: (,cjmt (xtznts describes the troposphere.
I.
It is the layer where most weather occurs.
II.
It goes from about 10km from the Earth’s surface to about 50km from the Earth's surface.
III.
It contains 50% of the air in the atmosphere.

  Identify which of the following combinations reflects the correct approxid)oy.1 f raot:k9 wg,hu-dph1mate composition of the Atmosphere with respect to the three main gasses-f1 ohwo) y1d9pak:,hrt .gdu shown:

  Identify which of the following is not true about atmospheric carbd.hovu fim0v m+nxa2;*x7s gz356m fyon dioxide levels ov s m7 f+muxva 2;ghivn*xf30ymo.dz56er the last 4 billion years.

I.
They have fluctuated (moved up and down).
II.
They have been constantly increasing overall.
III.
They have never been higher than they are today.
IV.
They have influenced the temperature of the Earth.

  Determine which of the following surfacecywq5lqi7:ql2 ai3b.*kz *p ys would have the highest albedo.