Which layer of Earth experiences the least amount of pressure?

What first caused people to consider that the continents were once one large landmass?

What is one early technological advance that shaped culture? a the use of fire b the discovery of arable land c family units. d migration

Afarmer who is grown corn for the past five years notices in the sixth year that the his harvest is significantly smaller, despite an increase in labor on the farm. the following year, the harvest continue to decline. which of the following explanations most plausibly accounts for the reduction in corn yield? a) soil degradation b) desalinization c) better irrigationd) terracing