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What is siliceous ooze mostly composed of? mineral grains that were eroded from continental rocks and transported to the ocean minerals that crystallize quickly from ocean water through various chemical reactions the shells of diatoms (single-celled algae) and radiolarians (single-celled animals) 13. Calcium carbonate is a type of hydrogenous sediment that can be buried and hardened into _____. limestone siliceous ooze calcareous ooze 14. How much of the world’s oil production currently comes from offshore regions? 75 percent 50 percent 10 percent 30 percent 15.
Seamounts are _____. submarine canyons found near Australia only found in the Pacific Ocean volcanoes that form on the ocean floor a special type of oceanic trench 16. Terrigenous sediment consists primarily of mineral grains eroded from _____. undersea minerals mid-ocean ridges marine animal shells continental rocks 17. Which part of the ocean is deepest? rifts trenches seamounts ridges 18. Multibeam sonar technology uses _____. more than one sound source and listening device multiple beams of bouncing microwaves more than one light source and viewing device multiple beams of ocean-floor sediment 19. Important mineral deposits, including large reservoirs of oil and natural gas, are associated with _____. mid-ocean ridges continental shelves rift zones ocean trenches 20. Which ocean has the greatest average depth? Pacific Indian Atlantic Arctic
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