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.
The twisting poses segment of a Bikram yoga workout moves quickly between postures to build heat and flexibility within the body. The first three of these poses, Cobra, Half Locust and Full Locust, last 10 seconds each, followed by the 20-second Floor Bow into the 40-second Fixed Firm.