maths
maths
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BLOOD
CAPILLARY
CARBON
CELLS
DIAGRAM
DIOXIDE
ENTERED
LUNGS
MATERIAL
PROCESS
SUGER
THICK
VILLUS
WASTE
| Y | Y | H | I | D | O | U | W | T | Z | T | I | O | G | J |
| A | J | I | J | C | L | C | S | M | E | T | E | A | E | G |
| U | C | P | J | O | X | D | E | G | N | K | S | X | B | R |
| R | D | P | C | A | R | B | O | N | I | U | A | K | S | T |
| C | C | M | M | A | T | E | R | I | A | L | L | F | W | N |
| U | Q | P | O | H | P | V | D | I | O | X | I | D | E | C |
| F | D | R | I | K | O | I | W | N | J | K | K | P | N | S |
| I | F | C | E | X | A | L | L | U | N | G | S | R | T | K |
| A | K | C | H | G | O | L | W | L | L | W | M | O | E | O |
| L | F | Q | R | U | U | U | K | P | A | P | A | C | R | O |
| O | R | A | Y | X | D | S | T | S | Q | R | E | E | E | Y |
| P | M | U | Y | T | X | A | T | O | S | L | Y | S | D | M |
| L | C | L | R | Q | Z | E | X | W | L | D | Q | S | D | Z |
| Y | T | T | J | J | T | X | W | S | F | C | B | U | V | Y |
| L | N | O | T | E | B | L | O | O | D | E | L | Z | B | T |
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