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Trabajo de biología

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Muy resumido con mucha información sobre reptiles

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•CAMINAR SOBRE LAS
AGUAS •
• Grupos de animales

Hay animales que tienen las capacidades de posar en el agua , EJ: los mosquitos ,
insectos zapatero, Araña balsa …

•Características anatómicas

El mosquito: no tiene columna vertebral y su cuerpo tiene tres partes : el abdomen , el
tórax y la cabeza

Zapatero: son artrópodos mandíbulados , traqueados, con tres pares de patas y un único
par de antenas

Araña balsa: tiene los quelíceros con una sola articulación y una uña en el extremo, y
suelen estar dotados de glándulas venenosas

• Estrategias que usan para “ caminar” sobre el agua

Los pelos de las patas de estos insectos de patas largas contienen
surcos que retienen burbujas de aire

• Relación entre la tensión surpeficial del agua y su poder de
sustentación

Las criaturas disminutas logran moverse sobre estas menbranas , pues
con ellas la capa liquida es la dominante . En cambio, animales
grandes no pueden caminar sobre el agua por que la fuerza de
gravedad termina rompiendo la tensión superficial

• Imágenes de estos insectos :




pelos de MOSQUITO

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