Pollution that is will break down over time. a good example would

Biodegradable         when wood rots 

like if you leave types of paper and wood or cardboard over time it will break down and enrich the soil.

same things with a compost. 

answer and explanation;

composition refers to both the types of minerals within a rock and the overall chemical makeup of the rock while texture refers to the size and arrangement of the minerals or grains that make up a rock. both composition and texture can be used to classify rocks, such as igneous rocks. texture describes how the rock became solid or crystallized from liquid, melted rock. composition of a rock describes the minerals that make up a particular rock.