In the paragraphs that requires unity, are linked primarily (coherence) linked content. (Cohesion) by the order. Such as very important to the little or much less to take place by using the link. (Transitions)
in paragraph have a unity, any link to related (coherence) link content (cohesion) with sequence, such as the importance. Much to the less or less to many sort place, use conjunctions link time (transitions).