problems that characterize adolescence period

The Adolescent Period - Adolescence refers to an age between 8 to 16 years. It is a stage of human development between childhood and adultho..

Adolescence refers to an age between 8 to 16 years. It is a stage of human development between childhood and adulthoo..

Problems of Adolescence - Most problems of adolescence are due to failure in understanding the anatomical, morphological and psychological changes expected during adolescence. Psychologically, adolescence is such a vulnerable stage that bo..

Organic compounds are isolated either from natural sources or from reaction mixtures. These compounds are seldom pure and are usually contaminated with small amounts of other similar compounds, which are found to exist together or formed during the reaction. In order to characterize..

Presence of very few cells, which are loosely, arranged with prominent intercellular spaces. Presence of a ground substance called matrix secreted by the cells. Presence of supporting structures in the matrix called fibres. Usually the fibres are of two types white fibres made up of a prote..

There are seven periods in the periodic table and each period starts with a different principal quantum number. The first period corresponding to 'n' = 1 consists of only two elements hydrogen (1s 1 ) and helium (1s 2 ). This is because the first energy shel..

The length of the menstrual cycle varies widely in women, but on an average it extends to about 28 days. It is absent during pregnancy, may be suppressed during lactation and permanently stops at menopause. The menstrual cycle is divided into 4 phases. Follicular phase or Proliferative phase Ovulat..

Seeds of apple, peach, iris would not germinate even when the conditions for germination are favourable. Such seeds germinate after they have completed a period of rest, which is called period of after ripeni..

Periodicity of Elements - The recurrence of similar properties of the elements when they are arranged in the order of increasing atomic number, after certain regular intervals, is called periodicity..

The first period has two elements - hydrogen and heliu..