Why are VOLUME and MASS physical properties NOT used in the identification of substances or collection of EVIDENCE for example from a crime scene?

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

Why are people not able to scuba dive in the deep part of the ocean

Why does asexual reproduction result in offspring with identicle genetic variation