The author uses a historical text. It is a written document that allows obtain a more completed, diversified and meaningful knowledge of history. A historical text is a written document that can provide us, after its interpretation, knowledge about the human past. The object of commenting on a historical text is to approach the understanding of a historical epoch based on the elements provided by the text. Hence the importance of placing the document in its context. It is necessary to unravel what its author or authors have said, how they have said it, when, why and where, always relating it to its historical moment. They are based on reality, generally their structure is narrative and descriptive; usually they are written chronologically and reflect experiences.
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The relationship of operant conditioning to classical conditioning is the same as the relationship of -reflexive- responses to -voluntary- responses.
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Some of these challenges include: climate change, energy consumption, waste production, threats to public health, poverty, social exclusion, management of natural resources, loss of biodiversity, and land use.
Explanation:
Answer:
The earliest civilizations to develop were all situated near major rivers. These rivers provided a regular water supply and a means of transportation. The animals that flocked to the rivers to drink were a source of food... Thus they were able to produce enough food to support increasingly large populations.
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