Question

What is the effort to put by scientists and sailor to know about earth

Answer 1

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Thank you for the question!

Much is contributed by scientists and sailors which added in the information about the Earth. Like they told us about the shape of Earth. We have came to know about the age of Earth. The speed at which  Earth rotates. The lines of longitude and latitude were defined by them. Various islands and continents were discovered with their help. They have introduced map.

Hope it helps.