Enzymes act as catalysts because
a. they raise the activation energy
b. they lower the activation energy
c. they use activation energy
d. they maintain activation energy

B.they lower the activation energy

Explanation:

activation energy is the minimum energy required in order to proceed the chemical reaction

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.

videntify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.identify the dna change shown in the diagram and explain how that change can result in the increased genetic diversity often seen among siblings.