Qusetion 1. The different traits within a population are caused by option for answer 1. genetic variety, 2. natural selection, 3. pollution. Due to these differences the best traits in the population for survival will show up more frequently due to 1. genetic variety, 2. natural selection, 3. pollution. Question 2. In a new environment, traits for successful survival and reproduction become more common and traits that do not support survival become less common.
1. True
2. False

a symbiotic relationship with the mitochondria

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.