How many mass extinctions have occurred throughout earth’s history?

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.

Join our channels for latest updates

WhatsApp Telegram

More Random Questions

Q: Nuclear fusion is a reaction in which two nuclei are combined to form a larger nucleus. it releases energy when light nuclei are fused to form medium-mass nuclei. • fusion is the source of energy in what?
Ans: stars

Q: What percentage of Americans approved of Trump’s job handling in Feb 2025?
Ans: 50%

Q: What process can cause harmful alleles to become fixed?
Ans: mutation

Q: Which of the following is a Lakshana of Vataja Shotha?
Ans: Toda

Q: What tool was used for hunting in early times?
Ans: Spear

Q: What was the Dow Jones Industrial Average change on April 10, 2025?
Ans: -666 points

Q: Divaabalam is one of the lakshana of:
Ans: Vataja shotha

Q: According to Charaka, which Rasayana is indicated for skin health?
Ans: Haritaki

Q: Glyptothorax Punyabratai, which was in the news, belongs to which species?
Ans: Catfish

Q: What measure is the total mass of organisms at a trophic level?
Ans: biomass

Q: Which modern vaccine prevents meningococcal disease?
Ans: MenACWY

Q: The speed of a wave through connected harmonic oscillators depends on the distance between them, the spring constant, and the what?
Ans: temperature

Q: Which software life cycle model allows for iterative development and incorporates risk analysis?
Ans: Software Engineering

Q: Who can appoint the Lok Sabha Speaker?
Ans: Lok Sabha members

Q: Who was India's first female permanent representative to the United Nations, who has retired on 3rd June?
Ans: Ruchira Kamboj

Youngistan Junction

Welcome to Youngistan Junction, your ultimate hub for staying updated with the latest in current affairs, general knowledge, and general studies! Whether you're a student gearing up for exams or just someone passionate about expanding your knowledge, Youngistan Junction is here to provide you with an extensive collection of well-curated questions and answers.