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.
Live rock is generally a piece of reef rock (ancient dead corals) that is pulled directly from wild reefs or culture facilities. It is then boxed and immediately shipped to your local fish store or a distributor. Live rock provides structure for aquascaping and biological filtration in your aquarium. More often than not, live rock rock is still moist from being shipped right after it is collected. The reason for such quick shipment is to avoid the die off of beneficial bacteria and organisms that use the live rock as a host.