Hot answers tagged zoology
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The mechanisms of osmoregulation is different for sharks (and other elasmobranch fishes) and teleost fishes.
In Elasmobranchs the body osmolarity is maintained equal to the seawater by Na⁺ Cl⁻ and urea. Toxicity because of high concentrations of urea (strong chaotrope) is counteracted by high levels of trimethylamine oxide (TMAO). So, the elasmobranchs do ...
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Of course. There's several fertility tests available to determine the quality and quantity of egg reserve, and whether or not the there are abnormalities in the uterus.
However, some of them are invasive procedures, and all of them should be performed by a professional. I doubt the layperson would know what they're looking at on an Ovarian Ultrasound.
If ...
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You can't remove most organs. The heart, lungs and brain are the ones that without you'll die in seconds. The rest you'll live a few hours or more. All depends how long you wish to live. The best way to see which organs are most required is to look at the order organs are shut down when there isn't enough oxygen or blood. That tells you which area most and ...
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It's a type of centipede.
Based on the long legs, I would bet on something like that:
http://en.wikipedia.org/wiki/Scutigera_coleoptrata
Or at least a Scutigeromorpha http://en.wikipedia.org/wiki/Scutigeromorpha#Scutigeromorpha
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There is a list of "vital organs" on which there is a consensus that if such organs are removed, the body dies within hours/minutes. Yet people can live long with only one lung or one kidney.
Another list could include other organs that are semi-vital: we could live for a relatively long period without them, but their absence has to be compensated with a ...
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There are various parameters that describe change of seasons such as day length, temperature, humidity. But it can be assumed that most of these parameters ultimately depend on one parameter- day length.
The response of plants towards the length of day/night cycle is called photoperiodism (which dictates spring flowering).
This article explains the effect ...
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AndroidPenguin, where did you read that our immune systems are far better than those of 'a cockroach'? This seems pretty strange to me, but I'd be interested in reading a study that compared human and cockroach immune systems if you can provide a reference.
Victor, with respect to cockroaches, there are numerous species of cockroaches. Here's a page about ...
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