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Toilets have always been a great place to think about biology, I agree $\ddot \smile$. In short, urine contains the waste from our blood while defecation is just the stuff that we haven't digested. Kidneys are the organs responsible for draining wastes (mostly nitrogen-containing, or nitrogenous, wastes) from our blood. You're correct that the loss of ...


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Quoting a great biologist Peter Medawar : It is by no means difficult to imagine a genetic endowment which can favor young animals only at the expense of their elders; or rather at their own expense when they, themselves, grow old. A gene or combination of genes that promotes this state of affairs will, under certain numerically definable ...


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Your body knows it should die. Science discovered the details for us to understand. It is called apoptosis: pre-programmed cell death. The DNA in our cells is encoded to replicate only a certain number of times. Thus organs wear out as the cells are not being faithfully replaced (there are other factors to aging as well). [link] ...


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The writers of the show may have been somewhat imprecise either by accident or intentionally to avoid excessive details. There are several different stages of egg cells, with distinct names for each and for the process that leads from one to the next. The whole process of egg cell creation is called [Oogenesis].1 To quote Wikipedia: Oogenesis starts ...


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Try birthing a child for once. You need to be flexible to accommodate the growth of another organism inside you. Take a look at some pictures of the mothers spine during the course of a pregnancy, you will have no further questions. Same with belly size, breast size and vagina size upon birth. This video is a nice explanation of this. Also includes the ...



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