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the dramatic increases in crop production around the world from the second half of the twentieth century, as a result of the breeding of high-yield crops, and the wide-scale use of fertilizers and pesticides.
symbiosis where one organism lives on another (on the outside of another).
the collection and disposal or recycling of waste materials and the monitoring of waste.
irreversible disease where the alveoli are damaged, resulting in breathing difficulties.
a thin hairlike outgrowth of an epidermal cell of a plant root that increases the surface area...
cellular respiration that takes place when free oxygen is absent