State which of the following is not a.b 8vf qif ;)ugkj/gq- greenhouse gas.

  State the layer of the atm.-h wsym a4t9josphere in which clouds form.

  Figure: Levels of oxygen in Em br:2 t .4wriea. ))d uxprm(a.ob*rkarth’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 d ml8qb1x.kz2d+sc/dl yw- 4r ecosystems, including in the atmosphere as a gaseous zcd m8 4 wy+bdq ld-x.1l/2srkform.

State which element is not found in the atmosphere.

  Determine which of the following greenhouse gases is corvci y );v0/.-,davmxdi- mle mrectly paired with its soul-vv m-)amc;x mvei0,y / id.drce.

  State which is not true regardlbo grus+e;-u9hqi5+b,maw crl( +0 zing greenhouse gases.

  List the main greenhouse g fsgk 7d7fzmbt313hj, ases.

  Identify the pie charct48.g2:avbiv 2ajpmt7-dck t that most accurately represents the composition of the atmosk7 2c4da ic-gjm t:ba.v2v8t pphere.

  Determine which of the following statem12pb2o hv fzw 39p;uuoents is not true.

  Figure: Levels of oxygen in Earth’sz,zc/7xdvp t5 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 thno3v-7y(u ue vwc ju6*e atmosphere

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

  Figure - Layers of thi8yuq kjvklv8/ /b,v /e 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 desc64uhpq k h (ijt)yw6 nj4x77zsribes 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 follow;1 i zqnt+gpcu+c noie/i9c99 ing combinations reflects the correct approximate composition of the Atmosphere with respect to the three main gi9 9pn c9/u;+ qc1i nzcti+egoasses shown:

  Identify which of the following is not true about atmospheric carbon di(tzhz8p,;p jet aiv7b w- ,q6joxide lev8eaj7,zi q; (-wb,tpvj z t6phels 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 highest a y ckn4,w0 f6-6lmzmkrlbedo.