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
Alinara [238K]
3 years ago
8

What are the time divisions used in the geologic time scale and why are they placed that way --what determines it? (hint: rock l

ayers, appearance/disappearance of organisms). Which has the shortest length of time and which has the longest?
Geography
1 answer:
Gemiola [76]3 years ago
6 0

Answer:

As explained below.

Explanation:

  • The geologist has divided the earth tome into a series of time intervals, and they are not in equal length like the hours in a day as they are made through the historically significant events.
  • Thus they are divided into boundaries like the Permian and the Triassic boundaries are marked by the global extinction of species, another boundary of Precambrian and the Paleozoic which is marked by the first appearance of land plants and the animals.
  • Eon is divided into smaller times zones known as eras. And the eras are subdivided into periods. And the epochs are a finer subdivision of time as possible periods of Cenozoic.
  • The supereon known as Precambrian is divided onto Hadean, Archean and Proterozoic eons this is longest period of geologic history staring at 4600 million years ago. And quaternary period being the shortest under the Pleistocene epoch.
You might be interested in
How were efforts to determine the pre-Columbian population of America tied to the larger debate over the consequences of Europea
Lerok [7]

Explanation:

The early migrants firstly settled in America and came across Bering Straight .

Due to these diverse population , they scattered .

And the Natives developed by hunting , gathering , fishing . and started farming  , and stayed at one place .

But before the appearance of the  Columbian population , North America were having around 16 million Indians .

And

Thereafter , the population of Indians reduces due to the loss of battles against the spread of the White civilizations .

5 0
3 years ago
At higher elevations, the boiling point of water decreases, due to the decrease in atmospheric pressure. As a result, what
11Alexandr11 [23.1K]

b. At higher elevations, it would take longer to hard boil an egg, because there is a lower boiling point,  so the egg is boiling in water at a lower temperature.

Explanation:

The best answer from the given choices is that, at higher elevations, it would take longer to hard boil an egg, because there is a lower boiling point, so the egg is boiling in water at a lower temperature.

  • Boiling point is simply the pressure at which the vapor pressure of a liquid is equal to the atmospheric pressure.
  • At higher elevations, the atmospheric pressure is low and it would require little heat to boil water and turn it into vapor.
  • To hard boil an egg, we need elevated temperature.
  • But since water to use hard boiling has an unusually low temperature, it becomes more difficult since much of the water turns into vapor.
  • This is why at higher elevations, it takes a longer time to hard boil eggs.

learn more:

Boiling point brainly.com/question/9529654

#learnwithBrainly

7 0
3 years ago
When it is fall in brazil what season is it in England
Lina20 [59]

Answer:

I'm pretty sure it's spring

Explanation:

Since they are on different hemispheres, (north and south) one side gets more sunlight than the other. Like how in the U.S. there's shorter days and it's colder, but say in Brazil, it will be hot with longer days

6 0
2 years ago
A travel-time graphcan be used to find the
uranmaximum [27]
Distance to the epicenter of an earthquake
6 0
3 years ago
What does population mean?
kow [346]
Population means the number of people in a geographic area. It can also be used for subgroups of people or animals.
5 0
3 years ago
Read 2 more answers
Other questions:
  • The Cascadia subduction zone is 1,100 kilometers long, and its characteristics of youthful oceanic plate and strong coupling wit
    8·2 answers
  • Is coal biotic or abiotic
    8·2 answers
  • What's 90.00 - 0.026 =?
    13·1 answer
  • Ridges in the middle of the ocean are places where
    6·1 answer
  • Each of the following diagrams shows a spaceship somewhere along the way between Earth and the Moon (not to scale); the midpoint
    7·1 answer
  •  When meaning is added to information it becomes​
    7·1 answer
  • The arid and semi-arid climate of much of Southwest Asia creates biomes that are characterized by
    10·1 answer
  • Which of the following states pictured on the 1924 map has not survived as a nation-state, due to internal conflict?
    11·1 answer
  • Does the earth rotate clockwise or counterclockwise.
    15·1 answer
  • Which of the following most likely to increase the chance of the formation of a heat island?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!