Two most important factors influencing the life of organisms are
Soil, temperature
Light, water
Water, temperature
Soil, Light
Which of the following is ecological energy source
Factors which determine to the large extent the vegetation of any area are
$I.$ $pH$ of soil
$II.$ mineral composition of the soil
$III.$ water holding capacity of soil
$IV.$ weather condition
Choose the correct option
Give differences : Hibernation and Aestivation
Biotic factors are
Niche is defined as the