It's not just the source of vitamin D , it is the raw material essential to many ongoing life process like respiration, photosynthesis etc . . Without which life is really impossible.
atmosphere
there would be no electricity no lightning and such.....
why the light of the sun is important.
There is no light in such a cave, therefore nothing for eyes to see.
It is important to have water on Mars as it is required for human life. Without it, humans would only be able to stay there as long as the water they brought from Earth lasted.
All the sphere's are important for the human life.
Ozone is important to human life. It is the most vital part of the life of organisms.
light energy is important in your life because without light energy how will you see whats going on around you
light energy is important in your life because without light energy how will you see whats going on around you
communication is very important in human life to express feelings ,and for the development of human in all fields to make our life better and happy communication is important
Xenon hasn't importance for the human life.
atmosphere
Each source of light is important. UV is important as it creates ozone.
because if we do not have light we cannot see
There are actually quite a few reasons why deserts are important to human life. These deserts hold many of the animals that humans rely on in them for example.
seasons are important bcoz our life activities are dependent on seasons.
because your face is poo.