Such variations in food supply have several causes.

这种在食物供给方面的变化有几个原因。

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The effects of the production losses are also linked to price variations, which are caused by supply and demand (im)balances.

产量损失的影响还与供需（不）平衡造成的价格变化有关。

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These actions are variations on a theme: supply more shares to meet demand.

这些不同措施都围绕着一个主题：增加股票供应量，以满足需求。

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Thus, small variations in supply turn into big lurches, up and down, in the price of food.

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This makes gold singularly insensitive to variations in supply.

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Or alternate variations that improve supply chain efficiency?

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