What is evolution ? ​

In biology, evolution is the change in the characteristics of a species over several generations and relies on the process of natural selection. ... Evolution relies on there being genetic variation? in a population which affects the physical characteristics (phenotype) of an organism.

Evolution is the biological change of a species over a span of time. The process of evolution keeps a species alive and thriving, and allows organisms to successfully pass down their genes. Keep reading for examples of how different species evolve to best survive their surroundings. Ex:- Transformation of a baby to an adult, growth of animals like cat, cows etc.

Answered by Benjemin

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it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.