堆肥过程是一个生物过程，腐熟度与未腐熟堆肥中植物毒性物质有关，可采用生物学方法进行评价。
Because composting is a biochemical process and the compost maturity is related to phytotoxic substances in the immature compost, it can also be assessed by biological methods.
在受污染的市区，他们还促进臭氧的产生，臭氧是对动物和植物生命有潜在毒性的烟雾的关键成分。
In polluted urban areas, they also enhance production of ozone, a key ingredient of smog that is potentially toxic to animal and plant life.
对红色的敏感可以让早期人类和其它灵长类更容易区分植物性食物的成熟程度和毒性。
It also could have given early humans and other nonhuman primates the benefit of distinguishing ripeness and toxicity in foods such as fruits and plants.
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