The idea around which the information revolves is called the dominant idea. But, not all the dominant ideas have the same relevance; There will be, then, what to differentiate between main ideas and secondary ideas.
The main ideas represent or express essential information for the development of the topic at hand. For example, in the fable "the hare and the tortoise", the main idea is:
"A lion challenged a morrocoy to run a race, the morrocoy accepted on the condition that it would give him some advantage and the lion"
Secondary ideas express details or aspects derived from the main theme. These ideas often serve to expand, demonstrate, or exemplify a main idea. For example, in the fable “the lion and the morrocoy”, the secondary idea is:
“When they were near the finish line, the hare sat down to wait, but fell asleep, so the tortoise arrived, passed in front of it and he reached the finish line first, winning the race ”.
The use of secondary ideas does not mean detours. There is an important point to differentiate what is the main idea of a text from what is secondary. A main idea is one that in the case of deleting the rest of the paragraph would still have the same value and the same meaning for itself. On the other hand, the same does not happen with the rest of the ideas.
This learning has a great value since it allows improving reading comprehension, improving oral communication, having a better command of the language through written expression, giving an email a coherent structure. On the other hand, this understanding also brings greater efficiency to communication.
To end this concept you can say; what:
The main idea represents that each ecosystem has two components: the living beings and the characteristics of the place.
The secondary idea: it refers to animals and plants are the most abundant living beings in the ecosystem; Other living beings that can also exist are fungi and algae; The characteristics of the place are temperature, rain, soil, water and light; These influence living beings.
