The primary purpose of this passage is to a) provide an overview of the mechanics and key operations of the jaws of trap-jaw ants
b) analyse Patck and Baio’s techniques for filming two defensive maneuvers of trap-jaw ants
c) compare the jaws of odontomachus bauri to the jaws of other species of ants
d) describe the evolution of the ability of trap-jaw ants of perform an escape jump

Walking is not the most exciting form of exercise a person can take on for fitness. yet it is low impact and requires no fancy equipment. that makes walking a simple activity for those new to exercise. walking is less likely than other exercises to cause injury to leg tendons and muscles. all it requires is a good pair of sneakers-no cables, stylish outfits, or weights required. of course, a person could increase the benefit of a workout by adding weights or speed walking. identify the main idea of this paragraph. walking is a difficult and safe exercise for beginners. walking is an easy and safe exercise for beginners. walking is a boring and dangerous form of exercise. walking is an exciting and very effective form of exercise.