Biological Differences Research

17) Generally, world-wide, men tend to be taller than women on average. Do some extra research and state why this is case. What difference between men and women causes men to be taller, on average? (Research question) and 18) Generally, world-wide, men tend to be more muscular than women on average... (Budget: $10 - $30 USD, Jobs: Academic Writing, Anthropology, Biology, Chemical Engineering, Report Writing, Research, Research Writing, Scientific Research)