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Dec
30
comment Why even if all requirements for natural selection are met, it may not happen?
if all the living things are killed for instance there is no natural selection. if the environment does not affect the outcome of reproduction, i suppose that natural selection is not occurring, but its hard to imagine such a situation
Dec
20
comment Do humans contract more physical sicknesses and diseases than animals do?
I'd say humans do have more illnesses than similar animals - for the most part animals do not have doctors or medical care - the simple understanding of sepsis and sewers has extended lifespan tremendously. Previously we would just get sick and die. statistically speaking that means we get sick more often simply because we recover. I doubt that animal's immune system is weaker than humans though.
Dec
14
awarded  Yearling
Dec
8
revised Why are there no wheeled animals?
awkward phrasing
Nov
26
awarded  Enlightened
Nov
26
awarded  Nice Answer
Nov
23
reviewed No Action Needed IgA complement activation
Nov
6
awarded  Enlightened
Nov
6
awarded  Nice Answer
Nov
2
answered The mystery of coconut tree
Oct
29
awarded  physiology
Oct
26
revised Can general soap kill bacteria?
added 36 characters in body
Oct
26
comment Can general soap kill bacteria?
@AMR you clearly know more than I - happy to accept these amendments!
Oct
24
revised Can general soap kill bacteria?
added 465 characters in body
Oct
24
answered Can general soap kill bacteria?
Oct
21
awarded  Revival
Oct
21
comment What if there are no bacteria such as Streptococcus mutans
no kissing. no licking. no eating food touched by other people's mouths. (sharing an apple for instance.) seems unlikely... also total removal is hard but that's another matter.
Oct
14
comment Are original x-ray diffraction data available
sounds good @marcin - i'll do what i can to support it! it would be great to have it all in once place.
Oct
10
comment Why do mammalian red blood cells lack a nucleus?
I'm guessing there is no real reference. Its hard to prove that the nucleus is a problem for rbcs - the control experiment - comparing to rbcs with nuclei - is technically difficult. It makes sense to say it so, its passed on.
Sep
24
comment Why are there no wheeled animals?
There are co-gestated symbionts of course - but they are usually symbiotic microorgansms. Id not be surprised to find a parasite that co-gestated... Parasites are not symbionts of course. For some reason animals have a hard time living together completely symbiotically.