State which of the followt1t(s:flmh :)uyyud*y.v -bk ,e +ksr ing is not a greenhouse gas.

  State the layer of the atmosph dgsy4 ll83h;rere in which clouds form.

  Figure: Levels of oxygelluht;c2e: rv3r(:* qlsu; wan 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 cyc gznvr,weg: ,nj+w;n wu8/l :cled in ecosystems, including in the atmosphere as a gaseous form.8 :;z j gv+/rcnlw,guwn ,wn:e

State which element is not found in the atmosphere.

  Determine which of the following greenhx8 vfyvpu9s: 9gy8z 9couse gases is correctly paired with its soup9 8u8 yvfc: xygs9z9vrce.

  State which is not true regarding greenhouse gasesqqjte 6l:;kqzn *x1+r .

  List the main greenhouse gae /gu2lfj o9c+e4i0q+ y.kdoases.

  Identify the pie chart that motpzu :s-n i*q9j 5l0urar+ /d*swz4p zst accurately represents the composition of the atmospherta9p/ 5*z*s :+4ilnju dsu-0wzzprrqe.

  Determine which of the following statements is not t)*b-t v5v ixyd1h66vbnk *lcxrue.

  Figure: Levels of oxygen in Earth’s atm l.dqviu09 )v hec3b)uosphere

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 atmosphe k-d1d+uh p;gnre

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

  Figure - Layers of the atmosphf5kg-1 vz+uokd 4r8fdere

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 descrb4fn+bjobhg g8;i 0 ccj6rxv vzb58yf m-m(,4ibes 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 approximate cl l6x* jvyzfl *p*3e.lkms/5jomposition of the Atmosphere*j 5fy l l*v6l.eks3 xl*zmp/j with respect to the three main gasses shown:

  Identify which of the r0p ff(u +bhv1*x0*t bqi+ 4nlct7 jvmfollowing is not true about atmospheric carbon dioxide levelu lc0 04rjq+v*ttf1p*xi(vm+f nb h b7s over 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 surfaces would have the highe* gt3cvmdj29mb8s nt5st albedo.