Physical factors refers to abiotic factors like air,water,soil,sunlight,temperature and etc...water can be easily called as lifeblood of earth.air which contains oxygen is very precious because oxygen is the breath of our is very necessary because without it there is no,life is not possible without these factors and hence they help foe sustenance of the habitat.
Physical factors needed to sustain the life of plants are the abiotic factors like air,water sunlight ,soil etc .without the presence or availability of soil plants cant grow.without water plants will die,air like oxygen is needed for plants to breathe carbondixide is needed for photosynthesis water and sunlight are also needed for the process of photosynthesis