The answer is speciation....
<span>1. It creates a pressure gradient when it contracts by increasing the volume of the lungs, which decreases the pressure in the lungs.
Looking at the ideal gas equation, you can conclude that volume is inversely related to the pressure. Increasing volume of lungs will result in a decrease in the pressure of the lungs.
2. When the pressure in the lungs, or the intrapulmonary pressure, falls below atmospheric pressure, air enters the lungs via inspiration.
If the lungs pressure keeps decreasing, eventually it will fall below the atmospheric pressure. Air moves from higher pressure into the lower pressure area. This will cause the air outside come inside the lungs. The event is called inspiration.
3. During forced inspiration, other muscles called external intercostals assist in the process.
Other than </span>the diaphragm,<span> the external intercostals could also assist in the inspiration. External intercostals will expand the chest outward, while the diaphragm pulls the lung. Both of them will cause decreased pressure in the lungs.
4. The process of expiration is largely passive due to the lungs’ elastic recoil.
Unlike the inspiration, expiration is mostly passive. The chest wall is made of ribs that connected with elastic connective tissue. The tissue is stretched at inspiration and when then muscle that causes inspiration relax, the connective tissue elastic force will press the chest wall.
5. This causes the volume of the lungs to decrease, which increases intrapulmonary pressure.
The pressure from the elastic tissue causing the lungs shrink. As the volume is inversely related to the pressure, the decreased volume will result in increased pressure.
6. When intrapulmonary pressure is higher than atmospheric pressure, expiration occurs.
The pressure of the lungs keep increases and eventually, it reaches a point where the pressure is higher than the atmospheric pressure.
</span>Air moves from higher pressure into the lower pressure area so the air inside the lungs will be forced to flow outside. The event is called expiration.<span>
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Answer:
A
Explanation:
There are different mechanisms for transport of molecules across the cell membrane. One kind of this transport is facilitated diffusion, this is a form of passive transport, not requiring any ATP (the opposite would be active transport, where it does require ATP.
Simple diffusion does require special transport proteins, and neither does osmosis. Filtration is a technique used for sterilisation of water, where any impurities can be drawn out of the liquid
Hello. Happy to help.
1) Coast Lines: The location of marine fossils can help determine where and when ancient coast lines were in the past.2) Climates: Fossils can be used to determine the past climates. (Was an area cooler or wetter than the present.)
The presence of marine or land fossils indicates whether the land at one time was at the bottom of the ocean or not.
Also, you could mention radioactive dating and relative dating. I am sure that is mentioned in your curriculum.
Hope that helps.
Instead of photosynthesis, some of the autotrophs can survive without sunlight as an initial energy source because they use a process called chemosynthesis in which they harness chemical energy released from sulfur vents under the ocean, rather than from the sun.
<h3>What is an Ecosystem?</h3>
An ecosystem may be defined as the place or area where members of different species live together and interact with one another for the purpose of food, shelter, and space.
The process of chemosynthesis does not utilize energy from the sun to synthesize food. Rather, it makes food utilizing energy from chemical reactions, frequently incorporating hydrogen sulfide or methane with oxygen. The autotrophs who perform this process are known as chemoautotrophs.
Therefore, it is well described above.
To learn more about Chemosynthesis, refer to the link:
brainly.com/question/6614919
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