<em>PLATO </em>
A.
The population's birth rate falls below its death rate after a predator is introduced.
B.
A lack of mating opportunities increases the population's level of emigration.
<u><em>C.</em></u><em> </em>
<em>An increase in food availability increases the birth rate in the population.</em>
D.
The population's level of immigration falls below its level of emigration.
A. the magnitude of an earthquake
Oxygen, Silicon, Iron, Sodium, Aluminum, Calcium, Magnesium, Potassium
Answer:
The correct answer is A. The larynx moves up against epiglottis when food is swallowed to prevent passage of food into it.
Explanation:
The epiglottis is a moist, cartilaginous structure that is part of the cartilaginous skeleton of the larynx. It also marks the boundary between the oropharynx and the laryngopharynx. The epiglottis obstructs the passage of the bolus at the time of swallowing preventing it from going to the respiratory system.
Larynx closure occurs when the vestibular and vocal folds approach the midline during swallowing. Occasionally, when you eat very fast, solid foods or liquids can enter the larynx.
Explanation:
The cellular communication is an important aspect of unicellular and multicellular organisms in the environment. The cellular communication may differ in the bacteria, plants and animals but the mechanism of cellular communication remains the same.
The mechanism involves the receptors, change in the structure of receptors which triggers the signal to respond and then the response of the cell. Therefore the evolutionary biologists must look at this mechanism and the molecules associated with this mechanism.
The biologist can look at these receptors and the ligands which initiate the transduction process in the organisms.
