Quick on the draw!

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

Clues

  • What is the only by-product of a hydrogen fuel cell? (5)
  • What name do we give to any fuels made from plants and animal waste? (8)
  • What type of biofuel is used mainly in Brazil and the USA? (10)
  • Which cell uses chemical reactions to produce electricity? (15, 4)

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