Population ecology is the study of these and other questions about what factors affect population and how and why a population changes over time. Population ecology has its deepest historic roots, and its richest development, in the study of population growth, regulation, and dynamics, or demography.
While running, the neck of a giraffe moves backward and forward to keep the animal balanced. Giraffes have a top speed of about 56 kilometres per hour (35 miles per hour), however, because its legs are so long a galloping giraffe does not appear to be going very fast.
Primary Muscles. The primary muscles involved in scissor kicks are the hip flexors and the transverse abdominis, the deepest muscle in the stomach. The hip flexors work to lift and hold your legs slightly off the floor during the exercise. The transverse abdominis aids in maintaining your stability, posture and balance.he primary muscles involved in scissor kicks are the hip flexors and the transverse abdominis, the deepest muscle in the stomach. The hip flexors work to lift and hold your legs slightly off the floor during the exercise.