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Are gills internal or external?
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- Describe the location and function of skin gills, tube feet,and the stomach.In case of aniamls kingdom describe the digestive system,respiratory system?In cephalopods contraction of _____________________of the mantle force water from the mantle cavity through the ________________. radial----inhalant valve circular-----inhalant valve radial----funnel (siphon) circular----funnel (siphon) tunic----inhalant valve
