Which statement best describes the relationship between activation energy and rate of reaction? Increasing the activation energy can increase the rate of a reaction.
Reducing the activation energy can increase the rate of a reaction.
Increasing the reaction energy does not alter the rate of reaction.
Reducing the activation energy can decrease the rate of a reaction.

What is thought to have caused the mass extinction at the end of the cretaceous period?

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.

What best describes the structure of the declaration of independence?