A primary succession can be described as the development of an ecosystem in an area where there was no form or sign of life before. For example, in the above scenario, a glacier did not support any form of life but it formed a new mountain lake where little life was seen initially. With the passage of time, a pioneer community will develop and get converted into a climax community.
In contrary, a secondary succession can be described as a type of succession which occur in areas where life existed before but was destroyed due to human or natural disasters.
<span>Pender's Health Promotion Theory.
The health promotion model notes that each person has unique personal characteristics and experiences that affect subsequent actions. The set of variables for behavioral specific knowledge and affect have important motivational significance.</span>
