<em> believe the answer is A.</em>
Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence. Scientific methodology includes the following: Objective observation: Measurement and data (possibly although not necessarily using mathematics as a tool)
The answer to the question is-
Blood flow though some areas of your lungs is decreased even though you are taking adequate breaths.
<h3>
What is pulmonary embolism?</h3>
A ventilation-perfusion mismatch results from a pulmonary embolus that reduces blood flow but has no impact on ventilation. It describes a diffusion issue when it says, "Oxygen transfer into your blood is delayed because of thick membranes." The final two comments discuss a ventilation-perfusion mismatch with sufficient blood flow but inadequate ventilation.
A blood clot in the lung's arteries blocks one or more of them, causing pulmonary embolism.
Blood clots that leave the legs or, in rare cases, other parts of the body are what typically cause a pulmonary embolism (deep vein thrombosis).
Chest pain, coughing, and shortness of breath are symptoms.
To learn more about pulmonary embolism with the help of given link:
brainly.com/question/19039199
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<u>Answer:</u>
The factor that contributes to aging is: A Cells stop dividing after 50 divisions.
<u>Explanation:</u>
- Normally after 40 to 50 divisions the cells stops dividing because they had already lost too much DNA for other divisions.
- So they eventually die, making the appearance like an aged person in any individual.
- As DNA is copied in every cell division process, they tend to loose small part of telomeres in each transfer process.
- Hence, after 50 divisions these cells fails to divide resulting in aging.
