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