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.
Movement. The hip joint is one of the most dynamic joints in the body. It is able to move in multiple directions including flexion, extension, adduction, abduction, and internal and external rotation. Twenty one muscles assist with the hip joint to create desired movements.The muscles are split into 4 groups. These are the flexors, extensors, adductors, and abductors.t is able to move in multiple directions including flexion, extension, adduction, abduction, and internal and external rotation. Twenty one muscles assist with the hip joint to create desired movements.