Explain the concept of opportunity cost​

Plz some scientists gaze into outer space to look for answers. some scientists seek answers in the depths of the sea. when georg steinhauser wanted answers, he looked within himself. well, he looked within his bellybutton to be exact. the austrian chemist spent three years researching the contents of his navel and the navels of others. he has solved one of life's greatest mysteries. we now know exactly what bellybutton lint contains! steinhauser presented his findings in the online version of the journal medical hypotheses. the vienna university scientist analyzed over 500 samples to determine the exact makeup of the lint. as suspected, most of the lint was made up of cotton from clothing. the fabric pieces are not alone, though. steinhauser found that the average bellybutton also contained pieces of dead skin, sweat, dust, and fat. steinhauser's notes also explained how lint accumulates. stomach hairs tend to grow in a circular pattern around the bellybutton. the hairs act like small hooks, capturing and holding contents within. shaving stomach hair can lead to a lint-free bellybutton, but don't act too hastily. although the contents of your navel may be a nuisance, research suggests that lint has a purpose. it is nature's way of protecting your bellybutton from germs and unwanted objects.

Micah wrote the following argument: our city should start a garden lottery that would award winners a free plot of land in one of the city’s abandoned lots to encourage community gardening. community gardening brings many benefits to a community, including a sense of belonging and opportunities to meet new people. gardening creates personal bonds between people of all ages. as a result, people feel connected to their neighbors, and crime decreases. which relationship does the phrase “as a result” clarify? a. the relationship between the claim that crime will decrease and the reason that community gardens foster a sense of community togetherness b. the relationship between the claim that community gardens bring many benefits to a community and the reason that people feel more connected to their neighbors c. the relationship between the claim that gardening creates bonds between people and the reason that people feel connected to their neighbors and crime decreases d. the relationship between the claim that free plots of land should be raffled in a lottery for community gardening and the reason that, as a result, neighbors will communicate more, and crime will decrease

What would happen if your skull bones had movable joints