How many mass extinctions have occurred throughout earth's history?
- Correct Answer: five
- three
- six
- four
Explanation: Extinction is the complete dying out of a species. Once a species goes extinct, it can never return. More than 99 percent of all the species that ever lived on Earth have gone extinct. Five mass extinctions have occurred in Earth’s history. They were caused by major geologic and climatic events. The fifth mass extinction wiped out the dinosaurs 65 million years ago.
More Random Questions
Q: Despite the season, what aspect of constellations never change?
Ans: patterns
Ans: patterns
Q: What cells does the skeletal system make?
Ans: brain cells
Ans: brain cells
Q: A battery is a multiple connection of what kind of cells?
Ans: voltaic cells
Ans: voltaic cells
Q: Which country's military forces killed 223 civilians, including infants, on April 28, 2024?
Ans: Burkina Faso
Ans: Burkina Faso
Q: On July 28, 2024, Indian warship INS Tabar participated in the "Navy Day Parade" of which country?
Ans: Russia
Ans: Russia
Q: What was a major focus of Trump’s administration in February 2025?
Ans: Healthcare reform
Ans: Healthcare reform
Q: Where was the fourth BIMSTEC Security Chiefs' meeting held on July 27, 2024?
Ans: Myanmar
Ans: Myanmar
Q: How many bases does dna have in total?
Ans: four
Ans: four
Q: Which country has introduced a new gold-backed currency on April 9, 2024?
Ans: Zimbabwe
Ans: Zimbabwe
Q: What should a driver do at a “No Left Turn” sign?
Ans: Avoid left turns
Ans: Avoid left turns
Q: What part of the plant absorbs water?
Ans: roots
Ans: roots
Q: Which form of e-marketplace brings together buyers and sellers from the same industry?
Ans: E-Commerce
Ans: E-Commerce
Q: The stored chemical energy of trees and other plants is called what?
Ans: byproduct energy
Ans: byproduct energy
Q: According to Charaka Samhita, which Dosha is primarily responsible for Kshudra Roga?
Ans: Vata
Ans: Vata
Q: What is the primary site for photosynthesis in plant cells?
Ans: Chloroplasts
Ans: Chloroplasts
