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.
Lower Body. The squat-like motion of the deadlift gives the legs an intense workout. The downward movement of the exercise targets the hamstrings and helps tone gluteal muscles, while rising with the weight works your quadriceps, the muscles located at the front of the thighs.