Pre-industrial agriculture was generally subsistence/self-sufficient agriculture where farmers mostly grew crops for their own consumption instead of commercial 'cash crops'. Remarkable modifications in agricultural practices have occurred over the past century in response to new technologies and global market developments. It has also led to technological improvements in agricultural techniques, such as the 'Haber-Bosch' method for synthesizing ammonium nitrate, which reverses the traditional practice of recycling nutrients through crop rotation and manure. become less important
เล่นไฮโลบนมือถือ