Ions have positive charges when their atoms lose electrons to become stable. Ions have negative charges when their atoms gain elcetrons to become stable.
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Zhou Dynasty is the people who did that[
Answer:
Letter B - India/Pakistan
Explanation:
The venue of the Green Revolution in India allowed to prevent a massive famine in India and Pakistan in the early 1960's, saving a great number of people in this second most populated country of the world.
A Mexican research team introduced a new variety of wheat in India during that period and that earned them a Nobel Prize in 1970.
