Another group learned about the genetic and environmental factors that can contribute to obesity, such as family history and junk food marketing.

另一组人学习能够导致肥胖的基因和环境因素，例如家族历史和垃圾食品的促销。

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Income, family background and environmental factors are other variables that need to be considered.

收入、家庭背景和环境因素是其他需要考虑在内的变数。

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It is tightly related with children's mental feature and social, family, environmental factors.

儿童中毒的发生与儿童个体心理特点、社会、家庭等因素有密切联系。

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Professor Meadow's figure on the likelihood of cot deaths was disputed by other experts who argued genetic and environmental factors made the odds of a second cot death in the same family closer to 200 to one.

BBC: NEWS | Health | Experts buoyed by Meadow ruling