The roots of the plant, anchor it into the soil and absorb water and nutrients deep in the soil. As the plant grows, the roots spread out more and more.The leaves take it sunlight and convert it into...
well when theres alot of plants around there dead leaves, bark,branches,and pine cones provide mulch wich make fertile soil,also for plants who dont like alot of light trees shade them.and the more...
they can be nitrogen fixing bacteria and they take nitrogen from the air and change it through a series of reactions in nitrates which plants use as their source of nitrogen