The document contains a word search puzzle with words related to biology hidden within. The words to find are listed at the bottom and include terms like hemoglobin, muscle, aerobic, anaerobic, immunity, red blood cells, adrenaline, exercise, catecholamine, pituitary gland, transition, systems, and hormones.

1. Encuentra en la sopa de letras las palabras que se encuentran en la parte inferior de
la hoja.
A D R E N A L I N A F A
S S A S D F G O S D F N
A A H I P E R C T H G A
T M R N T S H I H F H E
H E M O G L O B I N A R
E T C I V E R O P G A O
M S A C C U M R O F N B
A I G I G C O E F E I I
T S G S F O N A I J M C
I G R N R C A C S E A O
E T F A E I S R I R L C
S G D R C T E E S C O H
D H S T U O A J R I C E
T D A S E S O E F C E M
G M U S C U L O S I T A
B V Ñ X A A I N H O A T
I N M U N I D A D N C I
PALABRAS.
 HEMOGLOBINA
 MUSCULO
 AEROBICO
 ANAEROBICO
 INMUNIDAD
 HEMATIES
 ADRENALINA
 EJERCICIO
 CATECOLAMINA
 HIPOFISIS
 TRANSICION
 SISTEMAS
 HORMONAS