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Crucigrama Sopa de Letras Hoja de Trabajo
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Science Crossword

Teacher: adams
Horizontales
Spends early life in water
JAWLESS FISH
Use fins to move
The larva
Ectothermic vertebrate
Organs for breathing
Hardened layers of rock
Gas filled sac
Specific environment
ITS OWN TEMP.
BACKBONE
Verticales
A FLEXIBLE ROD
Scientist who study extinct organisms
Hardened remains
Pumps blood
Tissue flexible bone
Embryo moist
NO HEAT
Upper chambers