QUESTION: Generate a question with a factual answer?

ANS: How many vertebrates does Brazil's Atlantic Forest contain?

QUESTION: Generate a question with a factual answer?

ANS: When was the Casas Adobes Plaza built?

QUESTION: Generate a question with a factual answer?

ANS: What border does I-19 come close to?

QUESTION: Generate a question with a factual answer?

ANS:
What are the four bases used in nucleotide subunits?