This is true
It has happened before and was one of the factors that influenced the current position of the continents. It will surely happen again if one day an ice age happens.
It allows the grass and plants time to replace themselves when the animals migrate.
Economic geography is the study of the location, distribution and spatial organization of economic activities across the world. It represents a traditional subfield of the discipline of geography. However, many economists have also approached the field in ways more typical of the discipline of economics
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True costa rica has many conservation programs