How winter n autumn happen?

Question

world's tilt caused 4 seasons. Summer and winter happened at North and South hemisfera when Sunlight direct to Jadi and Sartan Line, in Sept it'll be an autumn for north Hemis n spring for South hemis n that so on in Mac. Just want to know, how autumn can be happened after summer mean in biology systems n detail..is that because of autumn happened because of not enough sunlight that disturb the transpiration system for plants to grow? As well as spring. How it's happen?

Answer 1

Autumn begins at the Autumnal Equinox.  That is when the sun is directly overhead at the equator.  The sequence of the occurrence of the season is caused by the revolution of the earth around the sun.  Autumn always follows Summer.  The season cause the plants activities.  It is not that the plants determine the seasons.