Institutional
Soil provides the necessary nutrients plant need to be able to sustain life.
Carbohydrates
africa
mitochondria
It helps sustain all life on earth. Including you life. Soil provides you with nearly all the food you eat. Many other items you use, such as cotton clothing and medicines, come from plants.
There is a water cycle because it is necessary to sustain life on Earth.
Apart from water, you need oxygen in the air to sustain life on earth. With these two indispensable features, both mankind,animals and botanical reserves sustain life on this planet.
vitamins
Because vital chemical reactions take place in water, and water is necessary to sustain life because of the important elements it has and the refreshment and nourishment it provides to organisms.
vitamins
To sustain life transport of material is necessary for plants and animals.
Answer some thing that is able to sustain oneself or itself independently