When something is periodic, it means that there are repeating patterns. Explain, using examples, why the table of elements is called a periodic table of the elements.

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?