Which statement best expresses the central idea of the text?

The reader can conclude that the initiation of many chemical reactions depends on specific conditions.

Read the dictionary entry.

Why is using diverse examples of chemical reactions important to understanding the pervasive nature and significance of chemical reactions in the text?

PART A: Read the paragraphs.

PART B: Which sentence from the passage best supports your answer in Part A?

What conclusion can be drawn about the importance of chemical reactions in sustaining life? Explain using key evidence from the text to support your answer.