The fact that Bill is 11 years old, means that he is in puberty, which<span> is the process of physical changes through which a child's body matures into an adult</span><span> Bill, age 11, noticed that he has some pubic hair. </span><span>The sequence is: 1) growth of testes, 2) first pubic hairs, 3) enlargement of penis, 4) first ejaculation of seminal fluid (spermarche), 5) height spurt, 6) final pubic-hair growth. </span><span> According to the usual sequence of puberty, his next pubertal event will probably be penis growth.</span>
The high growth of population in Terai region is because of migration from mountain and hill , growth of the population in the Terai region itself and immigration from outside i.e. from other neighbouring countries
