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prohojiy [21]
3 years ago
6

What is the approximate percent of oxygen by volume present in Earth's lower atmosphere?

Biology
1 answer:
Svetlanka [38]3 years ago
4 0

Answer:  21 percent

Explanation:

According to NASA, the gases in Earth's atmosphere include: Nitrogen — 78 percent. Oxygen — 21 percent. Argon — 0.93 percent.

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What is not a characteristic of the cortical nephrons?
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Answer:

Their nephron loop is closely wrapped with vasa recta.

Explanation:

Cortical nephrons are located in the cortex.

They form 85% of all the nephrons in the kidney. They are located mostly within superficial cortex of kidney. The loop of henle of a cortical nephron is relatively short and hence not closely wrapped with vasa recta. Efferent arteriole delivers blood to a network of peritubular capillaries.

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Which is the order of airflow during inhalation?
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The correct answer is B. Nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli

Explanation

The breath of living beings is divided into two processes, the first is inhalation and the second is exhalation. Regarding the first, it is the process in which the air is taken by the beings to be conducted to their lungs through their noses, passing through the nasal cavity, larynx, trachea, bronchi, bronchioles and finally alveoli where gas exchange occurs. The second process is the opposite, in which the air inside the lungs converted into CO2 is expelled, passing through the same places in an inverted manner, that is, alveoli, bronchioles, bronchi, trachea, larynx and nasal cavity. So, the correct answer is B. Nasal cavity, larynx, trachea, bronchi, bronchioles, alveoli.

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3 years ago
The male reproductive system includes
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C. the vas deferens.
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The suffix that means a creation of an artificial opening is spelled as
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The Suffix is -ostomy 
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Which statement describes the moment magnitude scale? A. It measures only small earthquakes. B. It collects data using a seismog
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Answer:

The moment magnitude scale is a scale that rates earthquakes by estimating the total energy released by an earthquake . Estimating the total amount of energy released, enables comparison of earthquakes more accurately.

This scale can be used to rate earthquakes of all sizes, near or far. The following statements describe the moment magnitude scale:

B. It collects data using a seismograph.

D. It estimates the total energy released from an earthquake.

E. It determines the amount of damage caused by an earthquake.

Explanation:

8 0
3 years ago
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