Coral reef. Coral reefs are diverse underwater ecosystems held together by calcium carbonate structures secreted by corals. Coral reefs are built by colonies of tiny animals found in marine water that contain few nutrients. Most coral reefs are built from stony corals, which in turn consist of polyps that cluster in groups. The polyps belong to a group of animals known as Cnidaria, which also includes sea anemones and jellyfish. Unlike sea anemones, corals secrete hard carbonate exoskeletons which support a
Ketamine Street Names. Ketamine is a dissociative anesthetic that can cause the user to feel out of his or her body. The term dissociative means that the user will disassociate with him or herself while under the influence of the drug. This can cause a wide array of reactions including adverse behaviors, odd patterns of thought and erratic actions.
Molluscum contagiosum is a benign (not dangerous) bumpy skin infection caused by a virus. Itâs spread from person to person during contact sports, sex, or sharing towels with someone who has it. Do NOT scratch or pick at the bumps. See your health care provider.