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Vertebrates are members of the kingdom Animalia and the phylum Chordata . Recall that animals that possess bilateral symmetry can be divided into two groups—protostomes and deuterostomes—based on their patterns of embryonic development. The deuterostomes, whose name translates as “second mouth,” consist of two major phyla: Echinodermata and Chordata. Echinoderms are invertebrate marine animals that have pentaradial symmetry and a spiny body covering, a group that includes sea stars, sea urchins, and sea cucumbers. The most conspicuous and familiar members of Chordata are vertebrates, but this phylum also includes two groups of invertebrate chordates.
Deuterostome phylogeny. All chordates are deuterostomes possessing a notochord at some stage of their life cycle.
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Signals can travel as slow as about 1 mph or as fast as about 268 mph. Axon – a long, single nerve fiber that transmits messages, via chemical and electrical impulses, from the body of a neuron to dendrites of other neurons, or directly to body tissues such as muscles.
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the angle of the corner was acute
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Pets are reliable friends to owners needing companionship. Doctors need to consider that a pet is most likely to lower blood pressure and stress in a patient. Pets need to suffer from lack of attention and shelters can provide homes by partnering with those that use a pet.
You're talking about the crucible right? Abigail Williams threatens the other girls because she wants the chaos of a witch hunt to ensue. If the girls spoke up, Abigail would be caught and John Proctor's wife Elizabeth would not have to pay for "stealing" John.
