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
andre [41]
3 years ago
5

The eras of the geologic time scale are best defined by a. Changes in climate b. Asteroid impacts c. Mass extinction events d. O

ld scientists in lab coats​
Geography
1 answer:
jasenka [17]3 years ago
8 0

Hey there! I'm happy to help!

The Earth is extremely ancient (approx. 4.6 billion years), so its milestones are going to have to be something huge and very grand in scope that has also happened a few times.

Changes in climate can be significant, but these are not as important of an event in Earth's history to mark the different eras. While changes in climate can lead to more drastic things, the changes on their own are not good enough of a definer.

Asteroid impacts are pretty huge, but it doesn't make sense to have each era be marked by an asteroid impact because it is an extremely specific type of event and it hasn't happened a large amount of times in Earth's history, so this isn't going to be the principal marker.

Old scientists in lab coats is just a play on words of the question. Obviously the paleontologists and geologists chose what to have define the different eras, but it isn't like the scientists themselves ARE the actual markers.

The eras of the geologic time scale are best defined by C. mass extinction events. Asteroid impacts were under the umbrella of this, and that is why it wasn't the right answer. This is a much more broad term that represents the times that Earth was completely changed whether that be from an asteroid, an ice age, a volcano eruption, etc. These are huge in scope and happened many times in the history of the Earth, so it makes to have these mark the different eras.

Have a wonderful day and keep on learning! :D

You might be interested in
What is the main characteristic of generalized anxiety disorder?
nikdorinn [45]

Answer: is characterized of a persistent and excessive amounts of worry and stress which can make you have a traumatic anxiety which makes them very anxious about money, health, work/school, and peers/family.

Explanation:

I hope this answer helped you out today!

6 0
3 years ago
What are solutions to the environmental concerns in Africa?
Contact [7]

Answer:

climate change, deforestation, and environmental pollution pose a serious threat its future. Solar solutions to energy use, habitat restoration, and clean water systems are just some of the issues covered by Aid for Africa members.

4 0
3 years ago
Russia is located in a ___ biome
valentinak56 [21]

Answer:

Taiga

Explanation:

The territory of Russia is located in a taiga biome.

6 0
3 years ago
Read 2 more answers
50 Points
Lesechka [4]

Answer:

50 Points

Prompt Rubric | Checklist

Exploring a New Place

Every location in the world is unique because of its people, culture, terrain, weather, and other features. If you had the opportunity to explore a new place, where would you go?

Write an essay that identifies one place that you have never visited before and why you would like to go there. Include details about the features of the location that interest you.

As you write, remember your essay will be scored based on how well you:

· develop a multi-paragraph response to the assigned topic that clearly communicates your controlling idea to the audience.

· support your controlling idea with meaningful examples, reasons, and information based upon your research and readings.

· organize your essay in a clear and logical manner, including an introduction, body, and conclusion.

· use well-structured sentences and language that are appropriate for your audience.

· edit your work to conform to the conventions of standard American English.

Explanation:

5 0
3 years ago
What is the state at which a net force is zero called
Alexxx [7]
The state of the object on which the net force is zero is 'constant uniform motion',
or 'unaccelerated motion'.
5 0
3 years ago
Read 2 more answers
Other questions:
  • The Earth does not appear to be gaining or losing heat as a planet in space.<br><br> True<br> False
    10·1 answer
  • Countries that basically have one ethnic group are
    11·1 answer
  • Crystal size in igneous rocks is determined by:
    5·1 answer
  • The circled area above is home to a desert. What is it’s name?
    10·2 answers
  • Which of the following statements about Nepal is true? A. The country's official policy emphasizes "gross national happiness." B
    8·2 answers
  • Which statement about a sovereign state is true?
    9·2 answers
  • What are three reasons that France stopped paying for voyages
    9·1 answer
  • How might the Japanese megalopolis, known as the Taiheiyō Belt, differ from the Greater Wuhan Megalopolis in China?
    10·2 answers
  • Explain why a decrease in pressure will trigger the meaning of rocks in the mantle?​
    9·1 answer
  • Uruguay and Argentina’s are two of the __
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!