About what percentage of ocean water is salt?
A. 3.5%
B. 10%
C. 15.5%
D. 35%
Answer (2)
The problem requires identifying the approximate percentage of salt in ocean water.
Recalling general knowledge, ocean water is about 3.5% salt.
Comparing this to the options, 3.5% is the closest value.
Therefore, the answer is 3.5% .
Explanation
Understanding the Question The question asks for the approximate percentage of salt in ocean water, and we need to choose the correct option from the given choices.
Recalling General Knowledge Based on general knowledge, the salinity of ocean water is about 3.5%. This means that for every 100 parts of ocean water, about 3.5 parts are salt.
Comparing with Options Comparing this with the given options: Option A: 3.5% Option B: 10% Option C: 15.5% Option D: 35%
The closest option to the actual percentage of salt in ocean water is 3.5%.
Final Answer Therefore, the correct answer is A. 3.5%.
Examples
Understanding the salinity of ocean water is crucial in various real-world applications. For example, marine biologists study salinity levels to understand the distribution of marine life, as different species thrive in different salinity ranges. In oceanography, salinity affects water density and ocean currents, influencing global climate patterns. Moreover, desalination plants use knowledge of ocean water salinity to efficiently remove salt and provide fresh water for human consumption. Knowing that ocean water is about 3.5% salt helps in these diverse fields, from environmental science to engineering.
The percentage of salt in ocean water is approximately 3.5%. Among the provided options, the correct answer is A. 3.5%. This percentage represents the average salinity found in oceanic waters worldwide.
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