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.
6 Basic Zumba workout Moves for Fast Weight Loss. Zumba draws a lot of inspiration from traditional Latin dance styles that are not only graceful, but also sexy. Here are the 6 fundamental Zumba steps that engage each and every muscle of the body.