State which of the following is not a greenq t;xj5yk1t9 w2 bth2*k(dh pjhouse gas.

  State the layer of the atmosphe0y-q*)vtka z+ppkv5ag, dpf: re in which clouds form.

  Figure: Levels of oxygeg mhi(0tn jdh yu40+h9n in 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, id4bmza0fp-cv08d:h ancluding in the atmosphere as a gaseous forpvdfah -z :8 adcmb004m.

State which element is not found in the atmosphere.

  Determine which of the following greenr)(.kzvih y 8fvny.q :house gases is correctly paired with its sou.(v yk qhri:zn)f8y v.rce.

  State which is not true regarding greenhov kmthgft(p7..56c zqq:y .xduse gases.

  List the main greenhousg- )l6eua;ley9t de. xe gases.

  Identify the pie chart that most mf i4f/g :3dh/7u cdkjaccurately represents the composition of the atmosphere. 3/j :h/ck d47idufm fg

  Determine which of the followinm6j sb k0r/ox hh:5d),ozwe* qg statements is not true.

  Figure: Levels of oxygen in Earth’s atmosp 7 dsiav/dvzn/ku,. 1p :b-s sd8wmc6fhere

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 the atmosphere g v1 bq 7njo4y6xivm5b.nmt6*

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

  Figure - Layers of the 01/hgoc ,hue yatmosphere

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 follo-)c g yyxrg32rh3f(l bwing statements 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 thehp(f,/llxw u 890zmyk correct approximate composition of the Atmosphere with respect to the three main gzwlkf h,(u8 xmp09 y/lasses shown:

  Identify which of the following is not true about atmospheric carbon dioxide levi kcpz8;5c9t s7.kt1cnsa fv (els over the la17scitp85zc9ksac.t (;f vn kst 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 n ) egnrphcl(wa nxw;r k40625following surfaces would have the highest albedo.