<span>The
answer is stage 3 sleep (deep sleep). During early phases of this stage the HGH (Human
Growth Hormone) is released by the brain (pituitary gland). This is especially significant for the growth
of a child during maturation. The
release of the hormone is pulse-like and not continuous.</span>
Symbiosis
a bird that sits in the mouths of crocodiles eat left over food from the crocs mouth while the crocodile gets his teeth clean
Basic cooperation
a colony of army ants are able to work together to take down bugs 10x its size by over wellming the bug because they cooperate and work together as a team. using cooperation
They are genetically and reproductively isolated. For the mule the specific isolation mechanism is termed as "Hybrid Inviability", where the postzygotic isolating mechanism prevents the hybrid from passing on their genes. A zygote may form with the sperm and egg, but the embryo will dies after a few cell divisions. The genetic information from male and female parents is insufficient to carry the organism through morphogenesis. *There are rare documented cases of a mule producing a viable offspring.
The physiological state in which all body systems are in balance and functioning normally is homeostasis.
<span>
Homeostasis is the tendency to maintain a balanced (relatively constant) internal environment and it can also be defined as the stable state of an organism. Homeostasis is maintained at many levels, not just the level of the whole body (blood sugar levels, pH, fluid balance…). Each of these is controlled by one or more homeostatic mechanisms (feedbacks for example).</span>
