Substitution is a small scale mutation. It doesn't hold a major effect like insertion and deletion. Insertion and deletion cause frameshifts, which can change all the codons after it, therefore coding the incorrect proteins. Hope this helps!
Public domain is when something belongs to the general public. It's not copyrighted.
Teachers shape and cultivate the minds of history, present, and future. Our greatest minds and intellects have learned both their knowledge and morality from their teachers. Teachers are the backbone of many generations for they molded us out of mere clay and brought out our inner talents, thoughts, and skills. They are the enhancers of our world which is entirely different from farmers. Both are very contradictory wherein farmers are a mere teaching of agricultural activities and past verified or unverified information. Teachers on the other hand hold an upstage wherein they are fully knowledgeable and know what is and what’s not applicable in the various lessons (both life and practical) through them.
Solution :
Every place and every countries have different social philosophy and ideals that the people of that places follow.
In some of the countries, the elderly person or the aged person are highly respected and highly valued. This is because they are respected because of their high experience of life and other work. They have seen the world and understand its mechanism of how society works. The elderly persons are full of resources and knowledge and it is important we learn form them.
In other countries, the younger people and the youths are mostly given respect and are highly valued than the elderly person. The younger people are full of energy and zeal to do new activities and other works. They are highly motivated and can quickly grasp things. So, in some laces the youths are highly valued.