2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/175534For a Lie algebroid, divergences chosen in a classical way lead to a uniquely defined homology theory. They define also, in a natural way, modular classes of certain Lie algebroid morphisms. This approach, applied for the anchor map, recovers the concept of modular class due to S. Evans, J.-H. Lu, and A. Weinstein.11 pages, AmSLaTeX, 3 typos correctedDifferential GeometrySymplectic Geometry17B56, 17B66, 17B70; 53C05text