The gas pedal opens the throttle. This supplies air to the engine and fuel is metered into the air stream to provide a combustible mixture to the engine. If the throttle is close, I.e., you lift you foot, this process stops and the engine slows to an idle setting where enough fuel is provided to keep the engine turning over but not to move the car at any significant speed. When your cruising at a steady speed, even on a flat road, the engine turns over faster and requires enough fuel so that air resistance are overcome as well as internal friction losses in the engine.
The nucleus stores the DNA; the ER synthesizes proteins (rough), steroids and lipids (smooth); the mitochondria is the powerhouse of the cell; the Golgi aids in transportation; therefore, the lysosomes would be the organelle to ensure that humans did not have webbed feet, as it would "dispose" of that extra tissue.
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The mitochondrion is the remnant of an ancient, symbiotic bacterium which colonised eukaryote cells. All multi-cellular life forms have them. In some organisms the DNA that codes for the mitochondrion has been moved into the nucleus and become part of the DNA of the host cell, but in vertebrates the mitochondria keep their own DNA inside themselves.
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The area becomes more diverse with more kinds of clams because they don't have starfish there as a threat anymore
Carbon dioxide gas
Animals and plants need oxygen. When an animal breathes, it takes in oxygen gas and releases carbon dioxide gas into the atmosphere. This carbon dioxide is a waste product produced by the animal's cells during cellular respiration. Cellular respiration occurs in the individual cells.
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