(ə si dik): Acid-forming or like an acid (an acid is a substance with a pH less than 7).

(al pīn): Of, relating to, or growing on mountain slopes above the highest elevation where trees grow.

(dī vǝrs): Differing from one another.

(ē kō sis tǝm): A system made up of an ecological community of living things interacting with their environment especially under natural conditions.

(i rōd): To wear away by the action of water, wind, or glacial ice.

(i rō zhǝn): The process of deteriorating or disappearing by wearing away.

(fra jǝl): Easily broken or destroyed; delicate.

(mə nu̇r or mə n(y)ü ər): Material that fertilizes land, especially bodily waste from birds and animals in stables and barnyards with or without litter.

(nā tiv): Living or growing naturally in a particular region.

(na ch(ǝ) rǝl rē sȯrs ma ni jǝr): A person who cares for and oversees the use of natural resources.

(ȯr ga nik): Of, relating to, or obtained from living things.

(rē i sta blish): (1) To make firm or stable again; (2) to introduce and cause to grow and multiply again.

(spȯi(-ə)l): (noun) Earth and rock that has been excavated or dredged.

(wȯ tǝr shed): A region or area bounded on the edge by a dividing ridge and draining ultimately to a particular watercourse or body of water.