Answer:
The <u>PCO₂</u> -carbon dioxide partial pressure- in the alveoli is 40 mm Hg and that of the blood entering the pulmonary capillaries is <u>45 mmHg</u>. This causes <u>carbon dioxide</u> to diffuse down its partial pressure gradient from the blood into the alveoli.
Explanation:
Gas exchange is a physiological process that involves the entry of oxygen into the body and tissues and the exit of carbon dioxide, a product of metabolic reactions.
At the pulmonary level, gas exchange occurs between the alveoli and the alveolar capillary, and the diffusion of gases across the alveolar-capillary barrier is dependent on a pressure gradient due to the partial pressure of gases.
In the case of CO₂ the diffusion goes from where the partial pressure is higher to where it is lower, i.e. <u>from the alveolar capillary, where the PCO₂ is 45 mmHg, to the pulmonary alveolus, where the PCO₂ is 40 mmHg</u>.
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Gas exchange brainly.com/question/4469204
The inner planets are those that orbit closer to the sun: mercury, venus, earth and mars.
Attending to the size this is the increasing order: mercury, mars, venus and earth.
Earth is the largest of the inner plantes.
Answer:
Groundwater.
Explanation:
Groundwater in this case is the primary abiotic factor that inhibits organism from being preserved after been buried. After being buried, decomposers here becomes the biotic factors that eat up dead bodies.
It is also known that sedimentary basins encounters a certain change in its subsidence rate over time, and eustatic sea level changes continuously, causing depth to variations in groundwater and lakes, ocean temperature, spreading rates, continental collision and cracks, and sedimentation in ocean basins.
D oxygen there was no free oxygen on the earth