What is menopause?

What is periodicity? What is the cause of periodicity?

What is Tyndall effect ? What is the cause of it ?

Write short notes Menopause

Differentiate between menarch and menopause.

True or False Onset of menstruation is termed as menopause.

During which period, does menopause generally occur in human female?

A human female experiences two major changes, menarche and menopause during her life. Mention the significance of both events.

What is biogas? What are its components ? What is the calorific value of biogas?