The so-called mycorrhizal fungi are found in association with nearly all plants in nature, where they deliver essential nutrients-specifically phosphate-to plants in return for sugar.

该真菌名为菌根真菌，伴生于自然界中的绝大部分植物。它通过为植物提供必需的营养成分——更确切的说是磷酸盐——以获得糖分。

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Some hotels are reacting to this by trimming non-essential spending; using potted plants as decorations, for example, instead of fresh flowers that have to be replaced every day.

面对这种情况，一些酒店为了降低成本，便缩减了非必要的开支。比如说，在装饰方面用盆栽代替鲜花，免去每日更换鲜花的支出。

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As a result, many plants and animals are at risk, as well as essential natural processes such as pollination by insects and the regeneration of soils by micro-organisms.

结果，许多动植物面临危险，昆虫传粉和微生物改良土壤等基本自然过程也面临危险。

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The plants can be deficient in certain things, especially fat soluble vitamins that come from meat and from essential amino acids.

植物中缺乏某些物质,特别是脂溶性维生素,那些只能从肉类和必需氨基酸中获得

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No, this is about CO2 that is essential to grow plants we and other creatures depend upon to live.

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But there are less toxic and nontoxic ways of controlling bugs, from borax (a poison) to essential oils, select plants, and ways to make common insects feel less welcome in your cupboard.

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Steroids occur naturally in humans, plants and animals and are essential to human physiology and development.

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