Biology, 30.06.2019 05:00 umchriis

Which abiotic factor is essential to all aquatic ecosystems except ocean hydrothermal vents, and why? a. phytoplankton, because it provides a source of minerals b. salt, because it provides a source of materials c. deep water, because it provides the necessary environment for organisms to move about d. sunlight, because it provides a source of energy

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Which abiotic factor is essential to all aquatic ecosystems except ocean hydrothermal vents, and why...