Home › Bihar Board Class 12 (Science) › Biology › Biodiversity and Conservation › How many mass extinction episodes occurred befor…
How many mass extinction episodes occurred before humans appeared?
AThree
BFour
CFive
DSeven
Answer & Solution
Correct answer: C. Five
Fossil records show five mass extinctions over more than 3 billion years of life.
Related questions
In which survivorship pattern is death equally probable at any age?Which survivorship curve is typical of K-selected species such as most mammals?Which survivorship curve typically characterises r-selected species?Humans are an example of which kind of selected species?Which trait describes an r-selected species?Which population model did Malthus formulate for constant environments?Growth in which the per capita rate falls as the population nears carrying capacity is calExponential growth assumes which condition?