The Ten Essential Public Health Services describe the public health activities that should be undertaken in all communities and were developed as a companion to the three core public health functions.
Live rock is rock from the ocean that has been introduced into a saltwater aquarium. Along with live sand, it confers to the closed marine system multiple benefits desired by the saltwater aquarium hobbyist.ase rock, or dry rock, is a generic term for aragonite rock that has no organisms growing in or on the rock. Base rock is often used as filler rock in the aquarium as it is much cheaper to purchase than live rock. In time, base rock will become colonized by living organisms.
A. Live rock is found in the reef areas of the oceans. Currently, most live rock used in the aquarium trade is harvested from the either the Caribbean or the Indo-Pacific areas. While it is illegal to harvest live rock in Hawaii, base rock is being quarried on the island of Oahu.ince live rock comes from dead corals, the shape, texture and porosity of the live rock will reflect the corals which were endemic to the area at the time the rock was formed. Live rock will contain flora, fauna and Coralline algae which is endemic to the area from which it is harvested.