State which of the following is not a g*clx 06 emgel u ddd)jn /u;6s*xw)fu6reenhouse gas.

  State the layer of the atmos sm3hrm:bp; n:phere in which clouds form.

  Figure: Levels of oxygen ,y/do bm: )xjuin 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 ecosystems, including in the atmosphere +wp6p.ead j b3 j1/ zipb,cwa9as a gaseous form. iwj9a +p36 1zd b/weapcbp.,j

State which element is not found in the atmosphere.

  Determine which of the following greenhouse gases is correcty;s.uc cyk8t 0h qh+,hly paired with its soh0hq syct,huky;8c. +urce.

  State which is not true regarding green*mq*r1y8 k5duc ghkvueia)u q,a144 j house gases.

  List the main greenhouse gsxe ja 8 txuxdrt-((.7ases.

  Identify the pie chart that most accurately represents the63doq5xn hkrvi .m2;t composition of the atmosphere.3rdqt xiv65. h;nmk o2

  Determine which of the following statements is n* /owjcm5,vzhpg) 5jw r7c kir i,0ka+qu*e h3ot true.

  Figure: Levels of oxygen in Earth’s atmospee0i9dx 0f be8here

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 a390pe4pd sfv otmosphere

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

  Figure - Layers of the atmosph--:d+o gx* xexh )vb0*rp mkmoere

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 troposphuw f.0ib9f0diglh )f+nk9 hc: ere.
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 approxi,ql z9k h6sj+3t .ij9-o 0zltr )vlryemate composition of the Atmosphere with respecy0t9 z 9t- 6kvl3),srq.oi+ejrlhjl zt to the three main gasses shown:

  Identify which of the following is nod prk4lia4yz3 z/2)nu t true about atmospheric carbon dioxide levels over the last 4 billion zlk2/ 4zdynp)i 34auryears.

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 alb1h+ 9-tj :z zsxtckyw24ec*ng edo.