Many cultures around the world still use a simple weapon called a blowgun, a tube with a dart that fits tightly inside. a sharp breath into the end of the tube launches the dart. when exhaling forcefully, a healthy person can supply air at a gauge pressure of 6.0 kpa.
what force does this pressure exert on a dart in a 1.4-cm-diameter tube?

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.

Ithink the answer is c but then again i'm probably wrong