Surveyors in the 16th century could measure latitude with great accuracy, but measuring longitude was much more difficult, mainly because there were not instruments for giving

It seem like there are information missing on the question posted. Let me answer this question with all I know. So here is what I believe the answer is,  because there were not instruments for giving its position with respect to its longitude.

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The scientist can conclude that there is a decrease in the natural resources due to human activities. because of innovation and modernization of the environment, then there goes pollution and other bad effects that destroys the natural resources.

Benjamin franklin and john adams