Abrir Paso 3E - Bolivia - This Miraflores unit is on ecology. Bolivia: Ecología - La Amazonía y la ecología del mundo, La papa: comida del pasado y del futuro. The vocabulary is on natural world; agricultural products. Grammar covers use of ser, estar and hay. Oral practice is the consequences of forests disappearing; analysis of a Neruda poem. Homework is open subject on an ecological theme; description of a plant useful to mankind. 20 pages, Paperback.