Answer:
Hello There!!
Explanation:
The answer is=>Parasite means that the organism must live inside (intracellular) or on the outside body of the organism (extracellular). The herbivores do not live on the host (plants) for its survival. They just eat the plants and fruits for getting energy. Therefore, the herbivores cannot be called as parasite.
hope this helps,have a great day!!
~Pinky~
It is because of what we called Greenhouse Gases. Greenhouse Gases absorbs the heat of the sun and brings it out to the earth. The heat of the sun travels 8 minutes and 20 seconds.
People who don't exercise get injuries because their body is not used to it so they will not perform well.
Answer:
Pulmonary arterioles <u>constrict</u> and system arterioles <u>dilate</u> when PO₂ is low.
Explanation:
Oxygen partial pressure (PO₂) is a blood perfusion parameter that indicates the O₂ concentration in the blood, related to the O₂ available in the lung alveolus or in the body tissues, at a given time.
Since gas exchange depends on the amount of O₂ and CO₂ -which determines both PO₂ and PCO₂- blood circulation and lung ventilation, a decrease or increase in PO₂ will result in significant vascular changes to ensure O₂ flow in the body.
- When the PO₂ in the alveolus decreases, the pulmonary arterioles contract, to redirect the blood to other better ventilated alveoli.
- In the tissues, a decrease in tissue PO₂ causes arterioles dilatation, which should promote the arrival of O₂ in that tissue.
<em>These adaptations make it possible to increase the bioavailability of O₂</em>
<em>and thus increase the PO₂</em>.
Learn more:
PO₂ at the arterial ends of the pulmonary capillaries brainly.com/question/9501095
