494 reputation
312
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location Germany
age 30
visits member for 1 year, 11 months
seen Oct 18 at 20:35

Oct
16
answered Do plants absorb toxins from the soil?
Oct
6
awarded  Critic
Oct
1
comment About animal ecology and one view of this in science fiction
I agree that the question is formulated very badly, has a strong philosophical bent, and could be interpreted in different ways. But there is a surprisingly simple answer: all interpretations I can think of are false. Animals do not strive towards maintaining environmental balance, neither consciously or unconsciously. The existing balance is a byproduct of the sum of their independent non-cooperative actions.
Oct
1
answered About animal ecology and one view of this in science fiction
Sep
26
comment How are arms different than legs?
Why do they have to be defined physiologically? It is a matter of common everyday language, and human language is generally inconsistent and full of "because we've always called it this way" and "because they look similar" reasons. Do you have any example of any scientific research which divides appendages in "arms" and "legs" and proves results which are true for the one and not for the other? Maybe if you got to stuff which is about gripping, or bearing weight, but then you are back at the informal language level.
Sep
24
awarded  Teacher
Sep
23
answered Why does botulinum toxin seem to be more dangerous to humans than to other mammals?
Sep
23
comment Why does botulinum toxin seem to be more dangerous to humans than to other mammals?
From a food safety point of view, you don't get botulism from "carcasses" (meat). Common botulism vectors are plants, especially the parts growing around dirt (making homemade garlic oil is a really bad idea), and honey (a danger to infants, adults can stomach the spores and they can't form a colony of living bacteria in honey). So, if there are animals which come frequently into contact with botulism, they aren't vultures. Actually, I might have to write an answer about that...
Sep
23
comment Why is green fur not a thing?
Polar bears have hollow hair shafts? Forget alpaca and mink, I want to knit polar bear yarn!
Sep
10
awarded  Nice Question
Sep
9
comment Does human eye lens have a magnification of its own?
What do you mean, "bigger/smaller than what they actually are"? What is your definition for seeing a thing in an absolute size, because I can think of none that makes sense? (And no, the human eye does not work like a camera, so saying that when the image of a 2 mm worm hits a 2 mm stretch of neurons in the retina you have "actual size" doesn't make sense, because it doesn't matter for your visual perception).
Sep
9
awarded  Good Question
Sep
8
awarded  Notable Question
Sep
8
awarded  Nice Question
Sep
8
awarded  Popular Question
Sep
8
awarded  Yearling
Sep
8
asked Do bacteria die of old age?
Jul
29
awarded  Curious
Jul
28
comment How do taenia form a species?
male and female taenia don't exist. A taenia is a hermaphrodite. So each proglottid can be like the other one, no difference in chromosomes needed.
Jul
28
comment How do taenia form a species?
Maybe I got something wrong, but in my understanding, a proglottid is not an animal, but a piece of the animal. The scolex buds asexually, passing its complete gene set to each proglottid. This means all proglottids of the same worm have the same set of genes. Now, a proglottid can fertilize itself or the neighbour proglottid, but it doesn't matter, because the genes of the mother proglottid and the father proglottid are still the same. This doesn't lead to new gene mixes. Or did I misunderstand the budding mechanism?