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S. C. Brooks has written: 'The permeability of living cells' -- subject(s): Permeability
organization metabolism selective response genetic material
A warm body allows diffusion to occur. Diffusion allows the cells to stay hydrated, but not overly hydrated.
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Predators create a selective pressure on a population. For example, birds that eat insects put a selective pressure on the insects to have better camouflage. Lions that run fast put a selective pressure on their prey to be able to run even faster.Its the same as a selective pressure created by the environment like adaptation to living in a cold environment. Those that can survive the cold the best live. The insects with the best camouflage survive as do the animals that can run the fastest.
Symbiosis is an interaction between two different organisms living in close physical association, typically to the advantage of both. The relationship is normally mutually beneficial.
when female birds choose brighter coloured male birds to breed with. - Fire being a selective agent on trees. When fires burn trees, trees with less thicker bark will have a better chance of surviving because the bark on the tree protects the living tissue underneath.
Similar, but not identical. And as most species are extinct beyond repair (we´ll probably never extract good dinosaur DNA) even backcrossing with living species is impossible.
Yes, breeding organisms for desired characteristics is called artificial selection. It can also be called selective breeding.
Who Must Register?Male US citizens (regardless of where they live) and male permanent resident aliens living in the US who were born after December 31, 1959 are required to register with Selective Service within 30 days of their 18th birthday (30 days before and after). If you fail to register during this time period, you may submit a late registration up until your 26th birthday.
The primary advantage that many people take away from living in an ethnic enclave is that THE LOCALS SHARE THE SAME DISTINCT CULTURE, which is usually different from the mainstream culture. This is particularly advantageous if the mainstream culture is hostile to a particular ethnic group. However, living in an ethnic enclave usually prevents effective assimilation and can be a detriment to having an economically successful life in the larger society.
The primary advantage that many people take away from living in an ethnic enclave is that THE LOCALS SHARE THE SAME DISTINCT CULTURE, which is usually different from the mainstream culture. This is particularly advantageous if the mainstream culture is hostile to a particular ethnic group. However, living in an ethnic enclave usually prevents effective assimilation and can be a detriment to having an economically successful life in the larger society.