How long do scientists estimate that the sea has been at its current level? 250 years
2,500 years
25,000 years
250,000 years

250,000

Explanation:

A. 250 years

Explanation:

NASA measures sea level around the globe using satellites. The Jason-3 satellite uses radio waves and other instruments to measure the height of the ocean's surface – also known as sea level. It does this for the entire Earth every 10 days, studying how global sea level is changing over time.

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