Roles

... of thick metal. The walls are able to withstand the pressure, your plastic might not (just as you point out) and the safety valve has 2 essential roles: it prevent the pressure to build up to unsafe levels even with the walls, and more importantly it controls the steam temperature (which is proportional ...

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... two-contributor sexual exchange, and triploidy is a harder thing to survive. Where there are two genders, the two have developed particular useful roles. It's all guesswork, though.

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... @alex The only similarities between plant and fungi cell walls is that they are called the same and that they share somewhat similar mechanical roles. The structure of the fungi cell wall is very different, it is made of chitin (poly-N-acetylglucosamine - thus a nitrogen containing sugar). Also, ...

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... for behaviour of values. The disadvantage of living in an extended type of family is shouldering more expenses for their basic needs. [edit] Roles and Responsibilities In extended families the network of relatives acts as a close-knit community. Extended families can include, aside from parents ...

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... "These are the genes that might underlie this form of cancer," she says. Genes involved in breast cancer predisposition can also play roles in cancers such as ovarian and prostate, she says. "They [the variants] may predispose to more than breast cancer in the end," she says ...

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