1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
elixir [45]
3 years ago
9

At the end of which period did nearly 3/4 of all species of life on earth go extinct in a very short time interval?

Biology
1 answer:
alukav5142 [94]3 years ago
7 0

There have been five mass extinction events throughout Earth's history:

The first great mass extinction event took place at the end of the Ordovician, when according to the fossil record, 60% of all genera of both terrestrial and marine life worldwide were exterminated.  

360 million years ago in the Late Devonian period, the environment that had clearly nurtured reefs for at least 13 million years turned hostile and the world plunged into the second mass extinction event.

The fossil record of the end Permian mass extinction reveals a staggering loss of life: perhaps 80–95% of all marine species went extinct. Reefs didn't reappear for about 10 million years, the greatest hiatus in reef building in all of Earth history.  

The end Triassic mass extinction is estimated to have claimed about half of all marine invertebrates. Around 80% of all land quadrupeds also went extinct.

The end Cretaceous mass extinction 65 million years ago is famously associated with the demise of the dinosaurs. Virtually no large land animals survived. Plants were also greatly affected while tropical marine life was decimated. Global temperature was 6 to 14°C warmer than present with sea levels over 300 metres higher than current levels. At this time, the oceans flooded up to 40% of the continents.

You might be interested in
1.How Can You Classify Single-Celled Organisms?
Sav [38]

Answer:

Explanation:

Unicellular organisms fall into two general categories: prokaryotic organisms and eukaryotic organisms. All prokaryotes are unicellular and are classified into bacteria and archaea. Many eukaryotes are multicellular, but many are unicellular such as protozoa, unicellular algae, and unicellular fungi.

5 0
3 years ago
Some meteroites have the same composition as the earths core
Nataly_w [17]
This is very so true
5 0
3 years ago
Which of the these do plants NOT obtain using Active transport?
zhannawk [14.2K]

Answer:

answer: carbon dioxide

6 0
3 years ago
Read 2 more answers
When organisms grow, what happens to their cells?
omeli [17]

Answer:

B.

Explanation:

whenever a organism grows the cells seperate to make up more room for the organism to keep growing until adulthood to elderly-hood

6 0
3 years ago
What is the difference between an Eukaryotic cell and a Prokaryotic Cell?
stepan [7]

Answer:

i d k

Explanation:

i d k

6 0
3 years ago
Other questions:
  • What cbrne agent are microorganisms and/or biologically derived compounds or molecules that cause disease in personnel, plants,
    10·1 answer
  • What is the biocultural approach in biological anthropology?
    6·1 answer
  • Which are smooth muscles in our body
    7·2 answers
  • Which anatomical description is true of the parasympathetic division of the autonomic nervous system?
    11·1 answer
  • What might happen to an organism that uses asexual reproduction if the average temperature of its habitat changes?
    8·1 answer
  • What trait of chloroplasts leads scientists to believe they were once independent microbes?
    15·1 answer
  • Which statement describes the importance of experiments in science
    9·1 answer
  • 2. Which molecule should never be in the digestive system
    8·1 answer
  • Define heredity in your own words.
    11·1 answer
  • PLEASE HELP IM ON FINAL ATTEMPT!!!
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!