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Hi, I'm Claudia. I'm Daniela. I'm Jose. I'm Max.

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And we are going to talk about...

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Crystallians!

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They are artifacts.

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The body.

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They have bilateral symmetry.

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The body contains

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cephalotorax and abdomen.

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They have mobile

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eyes, legs, and

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antennae.

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They are carnivorous and filter feeders.

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They respirate by the gills, aquatic crustaceans respirate by gills, and terrestrials respirate

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by the trachea.

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They let oxygen by the body's surface.

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They have a complex digestive system.

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They have an open circulatory system, and in this system they have antennal glands and the maximal gyric glands.

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They express substances by the green glands.

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Provedraction.

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They pass a process called metamorphosis, and they have selection.

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Interaction.

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The new system is composed of the endocrine system of the veins and the muscles.

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they have endocrine system and they communicate by tactical stimuli

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importance of the group we use them to eat to fish and they are part of the

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food chain and now we are going to talk about echinoderms body they have

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a dermo skeleton and some animals have the spines they are aquatic and they

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have radial symmetry. They are genoines, they live in salarias, they have globular bodies,

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and they have spikes. Asteroids, they live in rocky place and sandy place, and they have five

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and they are carnivores.

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Olothurians. They live in

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seabed. They have long bodies

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and they fit with organic matter. Interaction.

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They have a nervous system and an endocrine system.

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They are pheromones and they

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are stimulated by the body's surface.

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They have sexual reproduction, they are oviparous, they have paternal fertilization, and the starfish are reproduced asexually by fragmentation.

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The importance of humans making medicine to eat, and the ecosystem keep alveolus in control.

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This was our presentation of our video.

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We hope you liked it.