Biological Rhythms: the sleep-waking cycle
See how much you remember about biological rhythms and the sleep-waking cycle with this wordsearch. Answer the questions first then look for the missing word in the grid below.
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ARCTICCIRCLE
BIOLOGICAL
CAVE
CIRCADIAN
CIRCANNUAL
ENDOGENOUS
EXOGENOUS
EYE
HAMSTERS
HYPOTHALAMUS
INFRADIAN
LIGHT
MELATONIN
MENSTRUAL
NOISE
PINEAL
SCHOCHAT
SCHOCHAT
SCN
SIFFRE
SLEEP
SLEEPY
SUPRACHIASMATIC
TEMPERATURE
TWENTYFIVE
ULTRADIAN
ZEITGEBER
| H | Y | P | O | T | H | A | L | A | M | U | S | C | H | O | C | H | A | T | D |
| X | M | E | J | U | W | J | Y | I | W | J | O | Z | N | V | L | N | M | J | C |
| N | F | O | X | F | G | E | X | O | G | E | N | O | U | S | A | L | Y | D | F |
| T | D | P | S | A | E | P | N | X | O | H | E | I | C | I | L | U | H | B | C |
| G | Q | C | L | U | P | Z | N | T | Q | O | T | K | D | J | N | E | Q | J | D |
| T | N | D | E | L | P | A | L | L | Y | H | T | A | A | R | E | X | E | T | J |
| A | A | F | E | T | I | R | F | A | B | F | R | V | G | E | R | H | V | P | O |
| Y | B | U | P | R | N | C | A | Y | U | F | I | E | P | B | U | A | K | T | Y |
| G | D | S | M | A | E | V | R | C | N | R | W | V | G | E | T | L | E | W | P |
| B | F | J | E | D | A | Y | C | I | H | D | T | Y | E | G | A | A | N | B | S |
| Y | B | Z | L | I | L | S | T | R | A | I | N | S | K | T | R | C | A | G | O |
| Q | Z | D | A | A | V | X | I | C | M | C | A | J | N | I | E | I | I | Y | Z |
| B | O | U | T | N | V | O | C | A | S | B | P | S | R | E | P | G | D | Z | P |
| J | Z | X | O | X | K | A | C | N | T | H | H | I | M | Z | M | O | A | S | V |
| C | K | Q | N | G | V | Z | I | N | E | R | P | F | E | A | E | L | C | F | W |
| H | G | F | I | E | V | A | R | U | R | Z | P | F | S | H | T | O | R | N | R |
| J | Y | T | N | F | E | D | C | A | S | V | W | R | I | K | Y | I | I | Y | K |
| A | P | G | D | H | V | Y | L | L | P | U | Y | E | O | Z | R | B | C | Z | B |
| F | P | M | E | P | Y | E | E | N | D | O | G | E | N | O | U | S | T | U | F |
| A | N | P | S | C | C | Y | P | L | M | L | U | J | S | S | C | H | N | F | X |
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