Dive Master questions with correct answers

Your understanding of the aquatic relem is important for accessing dive conditions and emergency planning , as well as explaining to divers how to interact responsibly with environment True or False CORRECT ANSWER True What is the ocean's maor source of productivity and the base of the marine food chain? A. Drill B. Seagrass C. Coral D. Phytoplankton CORRECT ANSWER D. Phytoplankton Natrual processes, such as earthquakes and storms, are much more of a severe threat to coral reefs and wetlands than human-induced threats such as pollution. True or False CORRECT ANSWER False When and alien (invasive) species is introduced into an ecosystem, it may have no natural enemies, which allows it to quickly multiply and possible overtake and kill off native species. True or False CORRECT ANSWER rue A _________exits when relatively warm, low-density surface water is separated from cool, high-density deep water A. freshwater layer B. thermocline