Males and females often agree to be from different planets: there is a certain conceptual tidiness to biological explanations (assure us) > social is natural-> social arrangement between men and women. Fixed and changeable; natural = inequalities that exist. Fixed and changeable and inevitable: existing inequalities are not our fault, no one is to blame= work of nature, we cannot be held responsible, it"s in our genes. Why biological explanations are: no amount of political initiative, social reform and social spending will important. change the differences of men and women. Darwin"s theory on the origins of species-> 1859. Four key arguments of the theory of natural selection: reproduction and natural environment, genes are passed from one generation to the next www. notesolution. com. Productively successful= higher chance of passing own genes: species adapt to their changing environment, those characteristics that survive ten to become common in species. Argued if women are excluded from public life = good reason for it.