State which of the follo n: vh xarog:;b37au-xwing is not a greenhouse gas.

  State the layer of the atmosphere in which q9)f6ukqj7ad clouds form.

  Figure: Levels of oxygen in Earth’s atmosphere b l rg idl:-6bh07yxs,


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, including in the atmospherx ij-b x fl6m.*hnde2;e as a gase j*2leibhdmx 6 .n;fx-ous form.

State which element is not found in the atmosphere.

  Determine which of t*q.jauyj0(c2 7nd(6is/yh1btoj v qthe following greenhouse gases is correctly paired with its sour2 jqob1h(6*dv0j7.cq(u/t tyyijan s ce.

  State which is not true regarding greenho28 yh bblzx.6str4q5u use gases.

  List the main greenho e gp50pe:kxk 6vvj9r:9ut1 dluse gases.

  Identify the pie chart that most accuratelyjeinm39wao 6a)jxm k q8+a7m h7+l3jqs77cy d represents the composition of the atmoom67 3ska 7qq+ cx 7mh8mela9 d7jwjyn+ j)ia3sphere.

  Determine which of the following statements is not tu / y4.-ioxrrqbx 7na+rue.

  Figure: Levels of oxycaeayb6kw o6j1s -6m,gen 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.
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 at1 1b/cv psx* r4i,bqmrmosphere

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

  Figure - Layers of the atmol* (t0m3gmn*x v s8lffsphere

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 statements describes the tropospher4n40xr4 nnxo-ub2x vn e.
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 refler /2y9dwc3hvv eu:b;v.k hmz3 w t7jb7cts the correct approximate composition of the Atmosphere with respect to the threer.2 7hbz7 w3hwc;3vm:y/tebv9 ujkdv main gasses shown:

  Identify which of the following is cb q;5h/* f1,za w5dz b1jrkpbnot true about atmospheric carbon dioxide levels over the lastb fr5*qbbk;1/chw , z1p jz5da 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 surfaces would have the highest albed f.*1kgxd sxq.yhcvu.0a-x 1zo.