1. Genetic engineering has been used to develop all of the following exceptA. more productive farm animals. Resistant crop varieties Cultivation practices Natural IPM enemies tools Judicious use of pesticides Pheromone traps (use pheromones as lures) Copyright John Wiley &Sons;, Inc. All rights reserved. Solution 1. D.Plants that are resistant to viruses. 2. Integrated Pest Managment Tool. D.for farmers to control pests by using many different methods ,not just pesticides..