Hippocampal neurogenesis<span> is impacted by environmental factors such as age, excercise, stress and anti-depressant use.</span>
The correct answer is "<span>7 minutes".
The Rod-Cone-Break is considered to be a d</span>ark environment adaptation function in the eye, wherein for an estimated time of the first ten minutes in the dark, the cones<span> needs less light to reach a threshold response than do the </span>rods<span>. Thereafter, the </span>rods<span> need less light. The point at which the </span>rods<span> become more sensitive is called the </span>rod-cone break<span>.</span>
The brain represents 2% of the total body weight for a human. But it uses 20% of the total oxygen and calories absorbed by the body (so ten times more than its weight ratio) it proves that it is an important organ that need a lot of energy.
The brain is the seat of higher functions (cognitive functions, senses, nervous responses) and vegetative functions. It is, therefore, an essential organ that regulates all vital functions. Like a central unit in a desk computer, the brain receives information from the entire human body via afferent nerves, integrates and analyzes them, and responds by emitting new signals that descend to the parts of the body concerned by the efferent nerves.
The answer is continuous variation of phenotypic expression
I hope that helped
