History: challenges of our world

challenges and hopes for the future

challenges of our world
challenges and hopes for the future

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ACIDRAIN
BIOETHICS
BIOWARFARE
DEFORESTATION
ECOLOGY
GREENHOUSE
OZONELAYER
RACHELCARSON
B J P R E U T P I E V R T Q V
I G N E Q E D B N A C C Z N C
O T Z Y X S E X V Q V A O N J
E W X A J U S O A E D I I B M
T P Z L G O U S Q F T A T O J
H I G E H H N A V A R I Q Z F
I W U N T N U Q T D O R B G G
C X G O J E Z S I G P Z C J J
S W B Z D E E C S G N V S W E
A N N O S R A C L E H C A R Y
J L I P O G Z A F S C R K Z Y
U U Y F F M Q O D C J C T C S
L K E C O L O G Y L P P V O L
J D H M B L T F Q P I X E U U
W I Y B I O W A R F A R E F F
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