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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.
a collection of tissues joined in a structural unit to serve a common function.
an organ system that passes nutrients, gases, hormones, blood cells, etc. to and from cells in...
(also called secondary thickening) growth due to new cells being formed by the secondary...
a lateral meristem in the vascular tissue of plants. The vascular cambium is the source of both...