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Steven would spend only 1 hour in the gym 3 times and week, but recently he has been spending 3 hours a day 7 days a week working out. He has noticed that his back is chronically hurting. Once Steven has stopped his work out, he starts thinking about what he did not accomplish. This is an example of what type of behaviour?
Radially Symmetrical
An organism is described as radially symmetrical when its body structure can be sliced into symmetrical halves through any number of planes along its center.
Water Vascular System
Unique hydraulic system of echinoderms; functions in locomotion and feeding.
Echinoderms
A phylum of marine animals including starfish, sea urchins, and sea cucumbers, characterized by radial symmetry and a water vascular system.
Digestive System
A collection of organs that breaks down food into nutrients, which the body uses for energy, growth, and cell repair.
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