Should women be able to serve in the military?

With an american government question

What is the natural environment? the story of the interaction of people forming societies, cultures, and civilizationsan increase in the world’s temperaturethe process by which social institutions are adopted on a global scalethe natural world in which people, plants, and animals live

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society