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.
Giraffe neck bones are just bigger. You have over 230 moveable and semi-moveable joints in your body. You have 27 bones in your hand. You have 14 bones in your face. The smallest bone in your body is the stirrup bone in the ear, which measures 1/10 of an inch. The longest bone in your body is the femur (thigh bone), which is about 1/4 of your height.