<u>Answer</u>: an all or none response
According to the all-or-none law, it a certain threshol is crossed by a stimulus' strenght, it will cause a response in the nerve cell or muscle fiber. However, the strenght of the response will always be the same and will not vary with different stimulus strengths. The only requirement is for the threshold to be crossed.
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The answer to this will be is : </h3><h2 /><h2>
C. Plant roots grow into a crack in a rock.</h2><h2 /><h2>
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Because "mechanical weathering" It's a example of the Plants roots that grow on into a crack in the rock.
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<u>And Tell me if The answer is wrong. . .</u>
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<u>Good Luck With Your Assignment!</u></h2><h2 />
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Food web stability is most dependent on the number of connections among species.
