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
HACTEHA [7]
3 years ago
7

Until the early _______ there were only negligible amounts of free oxygen in the atmosphere.

Geography
1 answer:
erik [133]3 years ago
3 0
During the early earth, when photosynthesis has not yet evolved, there were only negligible amounts of free oxygen in the atmosphere. It was said that the Earth's  atmosphere had no free oxygen then. This is about 3.5 billion years ago.
You might be interested in
PLEASE HELP ASAP!!!!!!!!!
nikitadnepr [17]

Answer:

Georgia’s coast is guarded and monitored by several public groups.

Explanation:

3 0
3 years ago
Read 2 more answers
TRUE OR FALSE
egoroff_w [7]

Explanation:

2. False only 4 existing

2. Only 4 types of fish in the Artic Ocean

4. False, the surface of the Arctic Ocean could disappear entirely by 2035.

5. False, Russia's main centre of international maritime trade there.

6. True

7. True

8. True

9. True

10. False, very important strategic for the us

4 0
3 years ago
Why does cultural diffusion happen more quickly today than in previous centuries?
masya89 [10]
Because today we have more means of transportation, communication, and more advanced tech.
6 0
3 years ago
What factor has prevented ,Myanmar's economic development?
Anni [7]
Myanmar also known as Burma is an emerging economy with a nominal GDP of $74,000 billion in 2018. Factors that prevent Myanmar's economic development are, Industries like, Garment production, Illegal drug trade, Oil and gas, Gemstones, Tourism, and external trade. It is also followed by the macro-economic trends as Foreign investments and foreign aid. Their major agricultural production is rice which covers about 60% of the country's total cultivated  land area. Burma is the largest producer of methamphetamine in the world. And it is the 2nd largest supplier of opium.
6 0
3 years ago
Explain how plate movements cause sedimentry rock to get buried?
cupoosta [38]

Answer:

diverging plate boundaries, convection currents bring hot magma to the surface. This hot magma flows out onto the ocean floor, forming extrusive, finely grained igneous rocks. At convergent plate boundaries, sedimentary rock from the ocean floor gets pushed down into the mantle.

7 0
3 years ago
Other questions:
  • Which of the following statements best describes the uses of geography, one of the six essential elements of geography?
    5·2 answers
  • Each year , field workers travel from the southwestern United States to eastern Washington to harvest people.This movement is an
    5·2 answers
  • What is the new southern supercontinent named by alfred wegener
    13·1 answer
  • Which of these organizations lists "preventing mass extinction of species" as
    5·2 answers
  • Explain the scope and nature of Geography with emphasis on Geomorphology
    13·2 answers
  • The average temperature on earth has changed through the course of earth history true or false
    9·2 answers
  • Which Ancient Greek contribution do you think was the most important? Why? Give three reasons to support your claim. Make sure t
    10·2 answers
  • Question 9
    6·1 answer
  • I NEED HELP
    5·1 answer
  • What movement causes earth to have day and night?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!