The correct answer is: behavioral isolation.
Behavioral isolation is a form of reproductive isolation (prevention of interbreeding in closely related but not the same species) based on behavior such as rituals and signals-song of birds. This means that two species of birds, Eastern and western meadowlarks
are capable for breeding but don't breed because of differences in their breeding calls-songs.
Light alerts the biological clock to slow down the secretion of melatonin hormone that promotes sleep. Melatonin hormone is a hormone that is produced by the pineal gland in animals and regulates sleep and wakefulness. . The hormone is used to regulate night and day cycles or sleep-wake cycles, darkness causes the body to produce more melatonin, which signals the body to prepare for sleep. Light decreases melatonin production and signals the body to prepare being awake.
Answer:
Explanation:Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.
