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.
When giraffes walk, they move both legs on one side of their body and then both legs on the other side; this is unique to giraffes. However, they run in a similar style to other mammals, swinging their rear legs and front legs in unison. They can reach 55 km/h (35 mph) at full speed but only in brief spurts.
The arrangement of bones, muscles and connective tissue in the back allows for many different types of movements. One of these movements is lateral flexion. Pure lateral flexion involves bending the torso sideways.he primary muscles involved in lateral flexion of the torso are the internal and external obliques, the quadratus lumborum and the erector spinae.