2.1 Environmental Studies- The atmosphere- The composition of the atmosphere

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C P D C M V S Y A D A G K O E I O M O J U
A E Y H E W K W P Y O L F Q T S Z Y I C R
G O X W S V F E W N M M M U G F O O W W N
G K U E O R B A O A D J P W E G N R B Q T
E G P G S Y P N X M P X V E R P E N G P C
S J V U P K D I Y I E I C C K R P U W J O
U A J B H X N T G C K P C A F D D C C I J
T U I E E H H R E E D H K R Y F J L P R I
S K T Q R O F O N Q O T T B A J X E E A H
T N D R E O E G B U G M H O I F D A R J N
R N O F Y D G E W I P B E N U H U R E N L
A F T M J C P N D L N J R D G P K F H D C
T Q L G Q R A G H I T R M I V Q E U P V D
O N Q V V S J G S B R U O O F M N S S W U
S P M O F E L S I R E C S X Q Y Q I O R C
P B V L K I E T E I A M P I V J M O P H O
H I S V G P M M D U L F H D N J V N O I S
E E C G G E F O V M Q P E E I V P N R X T
R J M Q P I J O K O O I R J B E W P T R X
E X D Y Y J W O D A G V E J K N Q F I E X
G K Q L Q N N J R W Y X C A E K W B G E J

Clues

  • A combination of active processes that cancel out each others effects so that there is no overall change. (7, 11)
  • The layer of the atmosphere that absorbs UV and contains the ozone layer, temperature increases with altitude here. (12)
  • The layer of the atmosphere where meteors burn up, temperature decreases with altitude here. (10)
  • The layer of the atmosphere where the weather occurs, temperature decreases with altitude here. (11)
  • The layer of the atmosphere where X-rays are absorbed, space shuttles orbit here. (12)
  • The release of energy during the joining of the nuclei of small atoms (7, 6)
  • This gas makes up 0.000007% of the atmosphere, and absorbs UV light in the stratosphere. (5)
  • This gas makes up 0.038% of the atmosphere, and is used in phosynthesis. (6, 7)
  • This gas makes up 21% of the atmosphere, and is used in aerobic respiration. (6)
  • This gas makes up 78% of the atmosphere, and is part of proteins. (8)

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