**WILL MARK BRAINLIEST AND THANK YOU**

Choose all of the statements listed here that are true about the change over time as indicated by the fossil record.

Birds and flowering plants inhabited this area at about the same time period.

Animals with shells and fish appeared on Earth before land plants.

Flowering plants were critical to the appearance of insects.

Vascular plants appeared during the same period as mammals.

Humans were the last to appear at this site.

the answers are a and c

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

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.