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
What is the region of dna that controls the hereditary character
Naily [24]
<span>Genes.Genes are the working unit of the hereditary character of DNA. Genes act as instructions usually coding for a particular protein or function. One form of gene which are called alleles <span>determines the traits that can be passed on from parents to offspring.</span></span>
7 0
3 years ago
Define taxon ? give some example of taxon at different hierarchical level<br>please answe de do​
harkovskaia [24]

Answer:

Each unit or category of classification is termed as a taxon. It represents a rank. For example, the basic level of classification is species, followed by genus, family, order, class, phylum or division, in ascending order. ... So each of these categories can be called as a taxon.

Explanation:

please brainlist mark kr do.... please ❤️❤️❤️❤️

‼️‼️‼️⬛⬛⬛⬜⬜❓❓⁉️⁉️

7 0
3 years ago
Please help me out.​
aniked [119]

Answer:_____________

Explanation:_____________

6 0
2 years ago
A large population of deer lives in the forest. Wolves kill and eat the deer as a primary food source. Which of the following wo
MAXImum [283]

Answer:

The wolf population greatly increases

Explanation:

Study island

5 0
3 years ago
Why do plants of the fields become yellowish?​
aliina [53]

Answer:

Poor drainage or improper watering

Explanation:

Water issues — either too much or too little — are the leading reason behind yellow leaves. In overly wet soil, roots can't breathe. They suffocate, shut down and stop delivering the water and nutrients plants need. Underwatering, or drought, has a similar effect.

5 0
2 years ago
Other questions:
  • Which describes a disadvantage of social behavior?
    14·1 answer
  • In what form is most of the carbon dioxide present in our blood transported? Group of answer choices As carbon dioxide dissolved
    8·1 answer
  • As the organism inside the respirometer consumes oxygen what happens to the water
    14·2 answers
  • True or False: ALL organ systems work together or are interconnected! A) True B) False C) N/A D) N/A
    13·1 answer
  • How do humans shield plants and animals from natural selection? How do you think human can cause the genes for desirable charact
    13·1 answer
  • Which is the most accurate statement about the heating curve and energy
    6·2 answers
  • HELPPP!!!! ME!!!! PLEASE!!!!
    13·1 answer
  • You are evaluating a 5-year-old admitted to shadow general hospital with asthma having an acute exacerbation. what would you exp
    7·2 answers
  • What is not part of the respiratory system diaphragm, pancreas, lungs, trachea
    13·1 answer
  • A student takes notes in class as shown below.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!