Answer:
There is a higher oxygen content in the air of the lungs than that of oxygen-depleted blood and a lower carbon dioxide concentration. This gradient of concentration causes gas exchange during respiration.
Explanation:
The answer is B). Genetic screening basically testing for the genetic traits of an individual. Therefore the answer would be B).
Political science is the study of theory and practice of governance.
Sexual gratification is the act of pleasing or satisfying one's sexual urges or others'. One of its kind is sexual sadism which is a sensual and sexual gratification derived from inflicting pain on a victim or seeing their victim suffer. It is a paraphilic coercive disorder wherein it inflicts continuous harm upon its victim even without the latter's compliance which sometimes lead not only to his/her eventual death but also defacement of his/her body.
