State which of the follpd1 s w*fx)7noowing is not a greenhouse gas.

  State the layer of the a ecu16jki9e p4j59c yzbd: o/otmosphere in which clouds form.

  Figure: Levels of oxygen j r 1,ze0c.f4ucdqx q5in 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 ebbja5 u-:uk; ecosystems, including in the atmosphere as a gaseous fo5u- beja kb;u:rm.

State which element is not found in the atmosphere.

  Determine which of the following greenhouseq6 ku+onpfmqk-u 6bbt7iw *: + gases is correctly paired with its sourw q+k7:ik*mbu6qn6oup f t b-+ce.

  State which is not true regardorz5q 5aotps gr) 215ding greenhouse gases.

  List the main greenh8u,umjs v2jx*kl:ha8,n ov1xouse gases.

  Identify the pie chart that most accurately represents the compositaxndv nu- s 7,0*nv5ztion of the atmns-at57 nv v uzx,0*dnosphere.

  Determine which of the following statements is not t jlaug8mz. s56rue.

  Figure: Levels of oxygen in Earth’s atmzy ;v. nh.r+5bs1k jfqpc8f z-osphere

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 atmosphereukob;7cwgx k: w6o: x*

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

  Figure - Layers of thecucq ;7.ld +9hgbi va. 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 folo-i2. -w34w q)de pabd dztrd+lowing 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 the cv( 6l;jdnd; b5dohq, morrect approximate composition of the Atmosphere with respect to the three main gassev5bdlm,doj 6n;(;d qhs shown:

  Identify which of the following is not true about atmospheric css; -x3hq, pqrui2;k s yku5o2arbon dioxide levels over the last 4 billion years. iu;;kys2uo-skhpr q q3x,52s

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 fo2qgmn-hod q(8f jpf-5nea 6+rllowing surfaces would have the highest albedo.