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answered How do ants transport water?
Oct
20
comment What are the disadvantages of forbidding flights to and from the African Ebola region?
Having them separated at the airport only gives you better options in separating out passengers that started showing symptoms while on board. Infected passengers without symptoms could still change to another plane afterwards, that will not be tracked as it did not depart directly from the Ebola region.
Oct
20
comment Accelerated tree growth
If cut just above the ground, some trees would still grow sprouts out of their roots (basal shoots). Those could grow into a perfectly fine tree. I have no knowledge of a tree being able to regrow from a short stump. But that might be depending on the tree. One lack a sprout could have is nutrients, as the soil might already be depleted by the old tree.
Oct
15
comment True or False: Vaccines are designed to protect against invaders that are encountered rarely, not all the time
I think the idea behind this is not the frequency of the pathogen itself, but the frequency of exposure. If I am exposed to a pathogen frequently anyway, I have a chance to naturally develop immunity. If I never am exposed to it, one single exposure might be dangerous, if I am not vaccinated (exposed artificially). (Just to add, this is not necessarily true, but I tried to imagine what the author might have wanted to say.)
Oct
14
reviewed Needs Improvement Importance of knowing GC Content of an organism
Oct
14
reviewed Needs Improvement How to estimate the DNA density in human sperm head?
Oct
14
reviewed Satisfactory Why has grey hair evolved?
Oct
14
reviewed Excellent Is there a biological mechanism for evolution encoded into our DNA?
Oct
14
reviewed Needs Improvement What is the functional significance of the difference in cardiolipin/cholesterol ratio in different membranes?
Oct
14
reviewed Satisfactory What is this vinca like vine?
Oct
14
reviewed Needs Improvement Regarding the difference between cDNA library and RNA sequencing (Biochem. technique)
Oct
14
reviewed Satisfactory Help me Identify this Spider
Oct
14
reviewed Excellent What is the mechanism of oxygen uptake in E. coli?
Oct
14
reviewed Satisfactory Can a single axon propagate multiple simultaneous action potentials?
Sep
18
comment force required to do damage to child's leg/feet in collision
You should also take in account that it is a toy. Even if a collision does not damage the child, it might still scare it. Which is reason enough to avoid collisions.
Sep
4
comment What is this fuzzy, black fungus that grew on my plates in the 4C room?
I am far from an expert, but looking at similar pictures around the net I would guess for some Cladosporium species.
Sep
1
comment Why are human children more likely to get lice (nits) than adults?
Additionally, adults get aware of the lice earlier and will then (hopefully) avoid close contact with others until it is cured.
Aug
25
comment Is there any documented evidence for suicide among vertebrates other than humans?
The problem is, he did not ask if there is evidence for other vertebrates killing themselves. (As I would guess by the "Lemmings not accepted.") There is. So, the question is really can we classify any of these occurrences of them killing themselves as suicide.
Aug
21
comment Is severe but short-term pain worse than moderate but prolonged pain for the body?
The psychological answer will very much depend on how the individual copes with pain and not be the same for all individuals. This said, I think you should use a more abstract example, because the ways you are right now causing the different types of pain are also harmful in other ways than just causing pain and so also influence the biological answer with the fact that for example a high voltage shock is more damaging.
Aug
11
comment Organisms in food deposits
I cannot help to answer your question, but I admire your action of taking swabs instead of freaking out after discovering this fact.