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

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

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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