Answer:
For the countour part: Map c, contour is 50m (the lines increases/decreases with 50 meters each step). Map b, need to see the whole map to decide.
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The caste system in India was used to provide social control & conformity according to one's birth.
The caste system was a divided society. Only people who are Hindus follow this religion.
Solar system so that way of earth dies out we know our choices
Sun- provides life-giving light, heat, and energy to Earth; and generates space weather
It tell use how we came to be. How everything was formed.
A true .................................