The answer is C because it is the only one that makes sense to that question.
Hey! here is your answer
passive refilling of the heart occurs During ventricular systole, the blood pressure
Answer:
The correct answer is keystone predator.
Explanation:
In sustaining the composition of an ecological community, a keystone species plays an essential function. In the absence of keystone species, the ecosystem would fail to exist and would become drastically different. A predator is a classic illustration of a predator, which inhibits a specific herbivorous species from eradicating the dominant species of plants. In the non-existence of predators, the herbivorous prey would increase enormously and would clean the entire essential plant species, and thus, drastically change the significance of the ecosystem.
Answer:
The correct answer is B respiratory system
Explanation:
Respiratory system of our body play a significant role in the inhalation of oxygen into and exhalation of the waste product known as carbon dioxide from our body.
Respiratory system basically composed of diaphragm and respiratory muscles.The volume of diaphragm increases during inhalation and decreases during exhalation. This is called the elastic nature of lungs which helps in efficient gas exchange.
