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nikitadnepr [17]
3 years ago
5

PLEASE HELP ME :(

Biology
1 answer:
scoray [572]3 years ago
6 0
Sorry, it was easier to do it like it’s, hope you can read it! And hope it helps

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How does the spread of an airborne pathogen compare to the spread of foodborne and person-to-person pathogens
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You must come in contact with the infected air. It spreads slower, and more than one person is usually affected at the same time.

Explanation:

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What two events occur in prophase I of meiosis but not in mitosis
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The stethoscope is a device commonly used by doctors to monitor heart function. When listening to a heart beating using a stetho
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Answer:

The correct answers are:

1. closing

2. the ventricles and arteries,

3. a constricted trachea

Lub is the first sound of a heartbeat and is mentioned as S1. It is usually produced due to the closing of tricuspid and and mitral or bicuspid valves present between atria and ventricles.

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Dub, being the second sound is written as S2. It is produced due to the closing of pulmonary (located between right ventricle and pulmonary artery) and aortic valves (located between left artery and aorta).

These valves prevent the back flow of blood from arteries into the ventricles.

The time between the two sounds is often taken as the measure of the diastole i.e. ventricular filling.

Wheezing refers to a high-pitched sound produced when a person breathes, especially during exhale. It is caused by constriction of the airways or inflammation. It is considered as a symptom of various diseases such as asthma, COPD, allergies, bronchitis etc.

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What are three differences between dna and rna?
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