What would you expect to observe if you performed free-fall acceleration measurements of objects under water instead of in air

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.

The independent variable would be the fertilizer as it is what the dependent variable (the growth of grass) depends on.