The crucial environmental factor, they believe, is childhood stress particularly how securely someone was attached to his mother when a child.
It may be that genetic mutations can accumulate without actually leading to a disorder, until, perhaps, they are triggered by an environmental factor or pile up enough to reach a critical mass.
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Singer notes a number of possible explanations for why the other two groups might not have seen the behaviors initially reported, including compensation thanks to other genes, some unknown environmental factor, or variability in the knocked-out gene.
Behaviour patterns found at all sites were deemed as likely to be genetic as cultural (leaf-sponging turned out to be in this category), as were those whose absence was due to some environmental factor (fishing algae out of ponds is impossible where there are no algae to fish).
"As far as we know, it is still that example of the two people sitting by me as being at greatest risk, or someone who might touch the table where I have just put some droplets, or some environmental factor which is carrying these droplets to another person, " he added.
Ironically, because past research studying the after-effects of exposure to things like atom bombs and radiation treatments for cancer suggests the most important environmental risk factor for meningiomas is ionising radiation.
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Is environmental extremism one factor of many?
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Plastic electronics technology has many economic, manufacturing, form factor and environmental benefits, assuring that it will replace silicon in a variety of devices in the future.
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Environmental protection was an important factor in equipment design .
This looks at Economic, Environmental, Geopolitical, Societal, and Technological sources of risks, compares likelihood and impact of each factor.
When buying an automobile, the green factor has a nice reward attached to it, placing the consumer right in the cross hairs of Environmental Ideals and Economic Deals.
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