State which of the following is0w sxo ak//kwz2ve- 09ce t,mj not a greenhouse gas.

  State the layer of the u/gf)eoye,vepl7 9h 5lq.,n y atmosphere in which clouds form.

  Figure: Levels of oxygen in Earth’s atmtav ug*q 96rk*d-dv1jqt7w ) nosphere


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 atmospjlim /3)lf9 wfyfdw i)tp22q ;here as a gaseous forlf2 9 f 2w)iqf3lyjdm/pwt);im.

State which element is not found in the atmosphere.

  Determine which of the following greenhouse ga ofy-b2;ces 8pses is correctly paired with its soupyoe8c2fb; - srce.

  State which is not true rz 7 + hxjo)mz6ez/udx6egarding greenhouse gases.

  List the main greenhouse d2 t69jo2vkj hzyp).qgases.

  Identify the pie chart that most accurately represents the compositio.w-4 xs-n a7+ stpqlcr8p1epmn of the atmosphere. +l xe p48q tsna.7s1cpw-pmr-

  Determine which of the following statements is not true cd7 7k*w4jjjrp wk/*lh ri1:f.

  Figure: Levels of oxygen in Earth’s atmf uxbn2x vb)9n4vuk5 x:y*6kiosphere

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 atmu*33 tr:ileh iosphere

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

  Figure - Layers of the vqvm 4y di2mab0dyit r +0h*6:atmosphere

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 troposphere. :-av ymlu6/nhb 6rdc.
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 v7wsv8qsw o09 reflects the correct approximate composition of the Atmosphere with respect to 0 wo7 s9qs8wvvthe three main gasses shown:

  Identify which of the following is not true about atmoc61j w*on 5ukh9 6dudaz:*sb pspheric carbon dioxide levels over the last 4 billion ye*szchbunddp1w :* 66u9jo a5kars.

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 surfacr26- 3d) bramp 7skicees would have the highest albedo.