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
Elodia [21]
2 years ago
11

When did oxygen begin to accumulate in the atmosphere

Biology
2 answers:
maxonik [38]2 years ago
8 0
2.4 billion years ago the oxygen concentration in earth’s atmosphere increased suddenly from trace amounts to appreciable quantities
oee [108]2 years ago
4 0

Answer:

2.33 billion years ago.

Explanation:

Hope this helps <3

You might be interested in
_______ is the nitrogen fixing bacteria.​
Sonja [21]

<em>Answer</em><em>:</em><em>Nitrogen fixation</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>nitrogen</em><em> </em><em>fixing</em><em> </em><em>bacteria</em><em>.</em>

5 0
3 years ago
How do the 4 spheres interact with each other
Anna [14]

Answer: ENERGY AND MATTER MOVE between the land, water, atmosphere, and biosphere — between the four spheres. In addition to natural interactions, human activities, such as the clearing of rain forests, can affect interactions between the spheres.

Explanation:

7 0
3 years ago
What anatomical similarities do humans share with apes?
saw5 [17]

both are smart and can use there hands for grabing things and some can use sign language to humans

8 0
3 years ago
Enlist the major insect pest of vegetables.<br>​
Greeley [361]

Answer:

Cutworms, aphids, crickets, slugs, flea beetles, whiteflies, leafminers, and lepidopterous larvae  can be troublesome in the plant bed.

Explanation:

Hope this helps

3 0
3 years ago
What is the greatest current threat to the loss of Earths biodiversity
luda_lava [24]
The greatest current threat to the loss of the Earth's biodiversity is global warming. This is because when the ice melts, the cold comes down to us and makes us have rainy summers and very early snow and cold springs and cold autumns. And when the ice melts enough, water will start to come down and flood countries and cities, such as Manhattan. Scientists are predicting that California will break away from America.
3 0
3 years ago
Other questions:
  • Im looking for cool and interesting facts about the Lycoris flower/Red Spider Lily for a report if anyone can help, the answer w
    5·1 answer
  • PLEASE HELP!!!
    14·2 answers
  • consider the following data. which would have to happen to make the population growth of cheetahs in 2013 equal to the populatio
    8·1 answer
  • Convection currents within the Earth cause plate tectonics due to the movement of the mantle. Please select the best answer from
    11·2 answers
  • What organism is likely to produce offspring with the greatest genetic diversity?
    14·2 answers
  • How does the structure of cells allow animals to move
    12·1 answer
  • Can somebody help me match them
    6·2 answers
  • Match the various types of intrusive rock.​
    12·1 answer
  • Where does reabsorbtion of glucose take place?
    6·1 answer
  • Scientists define the boundaries between different layers of atomasphere besed on sudden changs in the temperature vs. altitude
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!