The global average CO₂ concentration crossed what milestone for the first time in April 2026, according to NOAA?
✓ Correct Answer: Option C
NOAA's Mauna Loa Observatory recorded a global average of 430 ppm CO₂ in April 2026.
📚 About This World Current Affairs Practice Question
This 3-level World Current Affairs question from the Apr 26 topic is part of One Paper Preparation's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.
How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free World Current Affairs practice test or use flashcards for spaced repetition review.