हम जानते हैं कि हड़प्पावासियों द्वारा हल का उपयोग किया जाता था क्योंकि पुरातत्वविदों को किसका साक्ष्य मिला है?

Which one of the following animals was not reared or domestically maintained by the Harappans according to established archaeological evidence?

The cities of the Harappan Civilisation were constructed using standardized burnt bricks with a uniform ratio of thickness, width, and length. What was this ratio?