scientists describe the closing of the isthmus of panama as early as 3 million years ago as having a dramatic effect on climate globally because it changed the flow of

Answer:Scientists describe the closing of the isthmus of Panama as early as 3 million years ago as having a dramatic effect on climate globally because it changed the flow of water between the Atlantic Ocean and the pacific ocean.Explanation:The isthmus of Panama is located east-west from the costa Rica border about 640 kilometers to the Colombian border.It connects north America and south America and separates the Caribbean sea of the Atlantic Ocean from the gulf of Panama of the pacific ocean.It was first explored by prehistoric hunter-gatherers migrating from north America to South America.The closure of the isthmus took place approximately  3 million years.The closure caused water to be shut from flowing between the two oceans the pacific ocean and the Atlantic ocean.This led to the formation of the gulf stream which covers most of the Atlantic Ocean and its warm waters and affects its precipitation and weather.read more on the isthmus from;https://brainly.com/question/15332157?referrer=searchResults#SPJ4