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NEED HELP! First to answer gets 10 POINTS!!?

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If one half of the solar energy that strikes the ocean surface is absorbed in the first meter, and one half of what remains is absorbed in the second meter, and so on, what fraction of the original sunlight reaches a depth of three meters?

1/4

1/8

1/16

1/32

Which pair of factors would both cause salinity to increase?

evaporation and freezing of sea water

freezing of sea water and precipitation

precipitation and melting of sea ice

melting of sea ice and evaporation

Sample P is 100 grams of water from the ocean surface in the North Atlantic. Sample Q is 350 grams of water from the ocean surface in the South Pacific. Which statement is NOT true?

Both samples contain about the same percentage of chloride ions.

Both samples contain about the same mass of dissolved ions.

Both samples contain the same types of ions.

Both samples contain magnesium ions.

I know its h.w but I did everything else on the test, I cant find them in my book

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  1. 1/8

    evaporation and freezing of sea water

    Both samples contain about the same mass of dissolved ions

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