Social Studies, 05.05.2021 05:30 ryanfish6106
Which of these statements describes an accurate explanation for how carbon dioxide and oxygen levels change within the ocean over time?
Photosynthesis by the phytoplankton increase the oxygen concentration of the ocean
Cellular respiration by primary consumers increases the oxygen concentration in the ocean
Eutrophication of the ocean leads to an increase in dissolved oxygen
Anaerobic respiration at the ocean floor decreases the carbon dioxide levels in the ocean
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The persian wars started when emperor darius i began an invasion of greece. what caused darius to decide to attack greece? a. greek pirates had raided persia's merchant ships and coastal towns. b. greek armies had attacked and taken over land that belonged to persia. c. greek city-states had supported rebellions in the persian empire. d. greek leaders had declared independence from the persian empire.
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Which of these statements describes an accurate explanation for how carbon dioxide and oxygen levels...
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