Question

Which of the following is the possible reason for the mass extinction of dinosaurs?

• A. Asteroid strikes on earth
• B. Volcanic eruption
• C. Dinosaurs are aliens, hence they left the planet
• D. Dinosaurs are still alive on the earth

Answer 1

Answer: (A), (B)

The correct options are
A Asteroid strikes on earth
B Volcanic eruption

Scientists tend to huddle around one of two hypotheses that may explain the Cretaceous extinction: an extraterrestrial impact, such as an asteroid or comet, or a massive bout of volcanism. Either scenario would have choked the skies with debris that starved the Earth of the sun's energy, throwing a wrench in photosynthesis and sending destruction up and down the food chain.