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Crucigrama Sopa de Letras Hoja de Trabajo
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Invertebrates

Horizontales
Body parts arranged around a central axis
Space between gut and body wall
Only one plane possible for a mirror image
Do not have backbones
Lined cavity
Muscle, skeleton, and most organs
Most marine, some freshwater and terrestrial
Verticales
1st opening becomes the mouth, 2nd the anus
Unlined cavity
1st opening becomes the anus, 2nd the mouth
Produces GI tract
Solid body
Skin and nervous system
The simplest animal existing today