Answer:
The correct answer a. Normal microbiota may significantly impact human health and disease.
Explanation:
Even though many organs and body parts of humans are properly working with the presence of microorganisms, when the population exceeds certain limits, the effect can be opposite and bad for health.
Answer:
Moths are active at night because they are nocturnal.
Explanation:
Answer:
The correct answer is : The opponent process theory
Explanation:
The opponent process theory states that one color of the color pair dominant over the other color and suppresses it. German physiologist Ewald Hering proposed it for the first time in late 18th century.
The opponent process theory of color vision suggests that our ability to perceive color is controlled by three receptor complexes with opposing actions. According to this theory the human eye perceive color is regulated by the 3 antagonist or opposing systems or channels in the eye.
For example, when red color hits the specific region of cones it activates the specific bipolar cells but when the cones stroked by the green color the bipolar cells are inhibited due to the members of different color channel or pair.
Thus, the correct answer is : The opponent process theory
A-plant Vacuoles are the largest in plant cells.