context: A 2011 discovery in the Canadian province of New Brunswick uncovered the earliest known plants to have grown wood, approximately 395 to 400 million years ago. Wood can be dated by carbon dating and in some species by dendrochronology to make inferences about when a wooden object was created.
question: న్యూ బ్రన్స్విక్లో కనుగొనబడిన మొక్కలు ఎన్ని మిలియన్ల సంవత్సరాల క్రితం?
answers: 395 to 400