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Oxygen enters seawater through diffusion from the atmosphere at the water's surface and through photosynthesis carried out by marine plants and phytoplankton.

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What are two sources of oxygen in seawater at the surface?

Two sources of oxygen in seawater at the surface include atmospheric exchange, where oxygen from the air dissolves into the water, and photosynthesis by marine plants and phytoplankton, which produce oxygen as a byproduct.


What are two ways salt gets into the seawater?

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What are the two most abundent elements in seawater are?

They are the hydrogen and oxygen of the water itself. After that it's chlorine and sodium.


What are two ways water enters a river?

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What are two ways in which oxygen becomes dissolved in water?

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carbon dioxide goes out and oxygen comes in


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skin surface (integumantary system) and the lungs (alveoli) .


What are two ways to increase the rate of oxygen up take?

Two ways to increase oxygen pick up by mammals would include breathing more deeply and breathing more rapidly


In what two ways does oxygen enter the ocean?

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What are two ways animals get oxygen?

extract air bubbles from water


What are two ways plants are used by other organisms?

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What are 2 main factors that influence density if seawater?

Temperature and salinity are the two main factors that influence the density of seawater. Colder seawater is denser than warmer seawater, while seawater with higher salinity is denser than seawater with lower salinity.