Cytokinesis occurs during mitosis; it's where the cell divides during the final stage
The immune system works with the digestive tract to help protect you from infection by these potential invaders. Your immune system also depends upon cells to kill invading organisms, and chemicals that don't require the involvement of cells at all, but which are simply toxic to bacteria and viruses. Acid in the stomach does the same thing.
<span>Chicks hatching from eggs is an innate behavior. Innate
behavioral adaptations are the result of millions of years of evolution. This
type of behavior is already "hard-wired" in the nervous system of
organisms and is usually inflexible. This is where a certain given stimulus triggers
the exact same response over particular organisms through time. The same adaptation
goes for other species that are naturally inclined to walk hours after their
birth, like giraffes and elephants do. It is in a way nature's natural
adaptation for species to survive through the course of time.</span>
