only 10% of the energy is transferred to the next step in a food chain. if there is 140 000j of energy in the first organism in your food chain, how much energy would be left at the end of the food chain? Explain how you got your answer.

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.

cuz some people don't have enough food. that's why we need more ppl to donate food to the hungry.