If you were only given one working muscle for forced expiration, which one would you choose and why

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What would happen if the tubing with the yellow band was placed in a beaker of distilled water?

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind