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Initial evaluation 1 - The Animal Kingdom (II). Vertebrates
EduBook Organización
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Are the following sentences true or false? All vertebrabtes have teeth. The squid is a vertebrate in the fish family. There are five main groups of invertebrates. Vertebrates are animals with an…
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Nematodes, annelids and molluscs
EduBook Organización
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2.1. Nematodes Nematodes are thin, round, non-segmented worms. There are a large variety of free-living land nematode species, although they prefer wet environments. Nematodes also include parasitic…