What effect has the drug trade had on some governments in middle and south america?

In 1915 the german geologist and meteorologist alfred wegener first proposed the theory of continental drift, which states that parts of the earth's crust slowly drift atop a liquid core. the fossil record supports and gives credibility to the theories of continental drift and plate tectonics.

Compare demographic and environmental effects of the columbian

Weathering is an example of an external force of change. question 2 options: true false