Energy, water, nitrogen and soil minerals are other essential abiotic components of an ecosystem. The energy that flows through ecosystems is obtained primarily from the sun. It generally enters the system through photosynthesis, a process that also captures carbon from the atmosphere.opography also controls ecosystem processes by affecting things like microclimate, soil development and the movement of water through a system. This may be the difference between the ecosystem present in wetland situated in a small depression on the landscape, and one present on an adjacent steep hillside.
Definition of âstumbling blockâ - English Dictionary. âstumbling blockâ in British English. stumbling blocknoun [ C ] Lack of willingness to compromise on both sides is the main/major stumbling block to reaching a settlement.
block. 1  a solid mass of wood, stone, etc., usually with one or more flat or approximately flat faces. 2  a hollow masonry building unit of cement, terra cotta, etc.: a wall made of concrete blocks. 3  one of a set of cube-shaped pieces of wood, plastic, or the like, used as a child's toy in building. a mold or piece on which something is shaped or kept in shape: a hat block. a piece of wood used in the art of making woodcuts or wood engravings. Printing. the base on which a plate is mounted to make it type-high.