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

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

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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