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First, I find this too broad, speculative and opinion-based to be suitable for the SE format. You mention a huge number of processes, which will also interact with eachother. However, taking a general view, life span and generation time can definitely be increased. Changes in temperature and nutrition will often change the metabolic rates and growth rate ...


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Short answer: Changing something (instead of everything) yes. There are several studies on the impact of environmental factors on life span. Of course it depends from organism to organism. Diet restriction for example has been shown to extend life span of worms and mice. Temperature is also working well, at least with microorganisms, the metabolism of ...


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To me, there are two issues that are mixed up here (if I understand you correctly). First, do you want to estimate the mean and variance for a statistical population (i.e. to characterize a larger population by independent samples), or do you want to calculate the actual density for a particular area, where you have counted all occurences in that entire area ...


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I am not sure I fully understand where is your misunderstanding. I think your whole misunderstanding boils down to the representation of food chain. Actually, let's talk about food web as the name gives an intuition of what is happening that is more correct than the term food chain. The conceptual view of the food web in a pyramid is super misleading. This ...


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Welcome to Biology.SE! About your title Let me first react to your title: Viruses selected by evolution. Evolution is any process of genetic (and eventually phenotypic) change in a population through time. Selection (Natural Selection for example) is one of such process. Genetic drift is another such process. So, evolution don't select viruses. Viruses ...



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