The correct option is B.
A positive feed back refers to the amplification of a particular effect by its own influence on the process that gives rise to it. In positive feed back, the specific response that is obtained as a result of a process continue to increase as the process continues or increase, that is both the process and the effect generated increase.
Terrestrial ecosystems (tetrapods)
It makes a longitudinal wave because it stretches and compresses while it slithers forward
Answer: c. Enzymes slow the reaction so more products can be produced
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