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On what does the ocean surface salinity primarily depend?Group of answer choicesice meltingfreshwater contentfreshwater content and saltsalttemperature

Question

On what does the ocean surface salinity primarily depend?

  • ice melting
  • freshwater content
  • freshwater content and salt
  • salt
  • temperature
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Solution

The ocean surface salinity primarily depends on both freshwater content and salt. Here's why:

  1. Freshwater Content: The amount of freshwater that enters the ocean affects its salinity. This can come from various sources such as rivers, rain, and melting ice. When there's a high amount of freshwater input, the salinity decreases because freshwater dilutes the salt in the ocean.

  2. Salt: The amount of salt in the ocean also affects its salinity. Salt can enter the ocean through underwater volcanic activity or from rocks on land that gets carried into the ocean by rivers. When there's a high amount of salt input, the salinity increases.

  3. Temperature: While not a primary factor, temperature can also influence ocean salinity. Warmer temperatures can lead to more evaporation of water, leaving behind salt and thus increasing salinity. Conversely, cooler temperatures can lead to less evaporation and lower salinity.

So, while temperature can have an effect, the ocean surface salinity primarily depends on the balance between the freshwater content and salt.

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