যেমন শুঁটিযুক্ত ফসল ( বরসীম , মটর ইত্যাদি ) এবং খাদ্যান্নযুক্ত ফসল ৷
Helping or complementary ( complementary ) activities - Complementary activities are those which are helpful in increasing output of other activities , meaning when efforts are made to increase the output of one activity , the output of other activity increases on its own .