Does learning always have a positive effect on a persons life ?

 Some may say that learning does have a positive  impact on your life, however that may differ in peoples views. learning is something that wont ever stop. some may say that you learn from the cradle to your grave. and that you are still learning till this day. learning isn't always considered  as good, for example: smoking. 
You learn how to smoke, however it doesn't seem to have a positive effect on you. But learning how to read does. Learning does not always have positive effects neither bad. it depends on how it is used or in some cases abused.
Hope that helped xxx 

Okay, biology isn't exactly my strongest subject (it never has been), but i'm pretty sure the answer is nucleotides. dna is made up of nucleotides. each nucleotide contains a phosphate group, a sugar group, and a nitrogen base. there are four different nitrogen bases: adenine (a), thymine (t), guanine (g), and cytosine (c). a always pairs with t, and g always pairs with c.