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
klemol [59]
3 years ago
6

What is the basis on which the subdivisions in a Geological time scale are made

Biology
1 answer:
Andru [333]3 years ago
3 0
 <span>The geologic time scale is divided into periods, which are then divided into epochs, which are further divided into ages. For example, the time of the dinosaurs lasted 3 periods (Triassic, Jurassic, Cretaceous), each period had 3 epochs (late, early, middle), and each age fit into one of those. Many epochs have more than 1 age associated with them. 
As for the basis for differentiating the eras, I'm not so sure. The only one I can say for sure is the end of the Cretaceous, which is when the dinosaurs suddenly became extinct due to a meteor impact. I think the divisions are based on significant, global-scale events that changed the world.

Sorry its so long but that the answer i think >:) ur welcome

</span>
You might be interested in
Which type of volcano forms over hotspots
Readme [11.4K]
Hawaii are the more hotspots area of volcanos. occurs in the type of temperature
3 0
3 years ago
Jane walked 5.00 meters on a road that inclines 13.0 degrees. how much distance did she cover horizon tally
kenny6666 [7]
4.87
hope this helps m8
8 0
3 years ago
What piece of evidence would best indicate that the fossil is human
Anika [276]

pelvic blades rotated inward

3 0
3 years ago
1. Sharks appear.
ra1l [238]

Answer:

3 1 2

Explanation:

simple organisms apeared first insects would be less complicated than fish the came sharks as they are more complex organisms also insects were first to be food for fish and fish food for sharks

4 0
2 years ago
A type of cell division that halves the number of chromosomes is known as
rjkz [21]
The answer is meiosis. 

In meiosis, this process produces 4 daughter cells which are all genetically different to each other and their parent cell. They have only half of the chromosomes. This is because, at one point in the process before the cells divide, parent do not copy their genetic information, which ends up each daughter cells only receiving half of the chromosomes after division.

The daughter cells are also said to be haploid, and in human, these cells are usually gametes, which are for reproduction, so that after 2 of these haploid cells join together, the correct amount of chromosomes can be restored. 
4 0
3 years ago
Other questions:
  • Based on your test results, the cocaine was cut with which substance?
    8·1 answer
  • Actin makes up cytoskeleton fibers called _____.
    6·2 answers
  • The production of ________ , a protein that binds calcium in the intestinal cells, slows as a result of a vitamin d deficiency.
    5·1 answer
  • Which of the following is an unanswered question about life on earth?
    14·2 answers
  • Which disease is associated with excessive dopamine secretion, decreased gray matter in the temporal lobes, and abnormal hippoca
    11·1 answer
  • Restriction enzyme HinfI cleaves a five nucleotide DNA sequence GA(A/T)TC. The ambiguity in the central position - (A/T) - means
    7·1 answer
  • WILL GIVE BRAINLIEST!!!!!!!!!
    9·2 answers
  • How can natural selection affect the songs that birds sing?
    10·1 answer
  • What is the meaning of life (do not answer with 42 lol)
    12·1 answer
  • Which of the following would most likely be reduced when combined with Al(s)?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!