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.
1 Their legs alone are taller than many humansâabout 6 feet. 2  They can run as fast as 35 miles an hour over short distances, or cruise at 10 mph over longer distances. 3  A giraffe's neck is too short to reach the ground. 4  As a result, it has to awkwardly spread its front legs or kneel to reach the ground for a drink of water.ign up for a campaign and make the world suck less. 1  Giraffes are the tallest mammals on Earth. 2  Their legs alone are taller than many humansâabout 6 feet. 3  They can run as fast as 35 miles an hour over short distances, or cruise at 10 mph over longer distances.