Question

4
1) Give scientific reasons : (Any two)
(i) Darwin's work on evolution has been a milestone,
(ii) By the age of 45-50 woman gets menopause.
(iii) There is fast increase in incidences of disasters in human life after
the World War II.​

Answer 1

Answer:

i)Darwin has proposed two very important theories of evolution, viz. Theory of natural selection and Theory of origin of species. (2) The evolution has taken place on the earth for last many crores of years. (3) The exact nature and process of these evolutionary changes become clear after studying Darwinism.

ii)Perimenopause means “around menopause.” At this stage, your estrogen and progesterone production slows, and you begin to make the transition into menopause. Perimenopause can last for 8 to 10 years. You'll likely still get a period during this time, but your menstrual cycles will become more erratic.