Agricultural productivity

? 2014 Pearson Education, Inc. Key Issues ? Where did agriculture originate? ? Why do people consume different foods? ? Where is agriculture distributed? ? Why do farmers face economic difficulties? ? 2014 Pearson Education, Inc. Where Did Agriculture Originate? ? Invention of Agriculture ? Prior to the advent of agriculture, all humans probably obtained needed food through hunting and gathering. ? Origins of agriculture cannot be documented with certainty, because it began before recorded history. ? Agriculture is deliberate modification of Earth?s surface through cultivation of plants and rearing of animals to obtain sustenance or economic gain. ? 2014 Pearson Education, Inc. History of Agriculture ? Hunter-Gatherers