Answer:
Iron and Bronze Age.
Explanation:
According to the widely accepted Kurgan hypothesis or Steppe theory, the Indo-European language and culture spread in several stages from the Proto-Indo-European Urheimat in the Eurasian Pontic steppes into Western Europe, Central and South Asia, through folk migrations and so-called elite recruitment. The 1st millennium BC was the period of time between from the year 1000 BC to 1 BC.
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Answer:
The difference between the independent and dependent variable is that the independent variable is the cause, while the dependent variable is the effect.
Explanation:
Imagine a cause and effect scenario. For example, Chris went gambling for 6 hours, and he lost $1,000. The time spent gambling (6 hours) is the independent variable, while the money lost gambling ($1,000) is the dependent variable because you can't lose the money if you never went gambling. The independent variable is the variable that is changed, i.e fertilizer 'x' in an experiment, the dependent variable is the variable affected by this change in the independent variable, i.e fertilizer 'x' affected a plant to grow 'y' amount.
