What are the most likely effects of the range expansion of the sea urchin?

The movement of the sea urchins into habitats already occupied by black-lipped abalone will most likely cause
in the level of interspecific competition for resources. As a result of the range expansion of the sea urchins, the population size of black-lipped abalone
, or both the sea urchin and black-lipped abalone could
.

The movement of the sea urchins  into habitats

Explanation:

already occupied by black-lipped abalone will most likely cause in the level of interspecific competition for resources. As a result of the range expansion of the sea urchins, the population size of black-lipped abalone

well, you see. the answer to your question is quite simple. the thing that is big, powerful, and over 9,000 is your mom.

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.