4. What is the relationship between enzymes and chemical reactions? a. Enzymes lower activation energy b. Enzymes slow chemical reactions c. Enzymes make products
d. Enzymes are carbohydrates

it's A.Enzymes lower activation energy.

Explanation:

Enzymes are biological catalysts. Catalysts lower the activation energy for reactions.

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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