Techniques such as crop rotation improve soil quality and help organic farmers compensate for the absence of man-made chemicals (44) _______ , for its ineffective use of land and labour, ther
Techniques such as crop rotation improve soil quality and help organic farmers compensate for the absence of man-made chemicals (44) _______ , for its ineffective use of land and labour, there are severe limits to how much food can be produced.
A. However
B. Moreover
C. Although
D. Because