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
hjlf
2 years ago
10

What allowed the earth’s atmosphere to increase in oxygen concentration?

Biology
1 answer:
Sophie [7]2 years ago
3 0

Answer:The answer is tiny organisms known as cyanobacteria, or blue-green algae.

Explanation:

These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and oxygen increase. Additionally, some sources you could use that I used to answer this question was

https://www.scientificamerican.com/article/origin-of-oxygen-in-atmosphere/

You might be interested in
NEEEDDD HELPPPP ASAPPPPP!!!!NOO ROCKYY
SSSSS [86.1K]

Answer:

4.166

Explanation:

3 0
3 years ago
Which of these elements are the least dense?
Gennadij [26K]
The first one because just think about how light oxygen or air is
3 0
2 years ago
Read 2 more answers
What is the difference between endarch and exarch
Ksivusya [100]
The spelling is the only difference 

7 0
3 years ago
Read 2 more answers
(07.02 HC) A certain type of heart-muscle disease thickens the heart muscle so that the heart chambers shrink in size. How would
mario62 [17]
The correct answer is The person would develop low blood pressure and feel faint because the heart will be pumping less blood with each heartbeat.   
<span>
The thickening of the heart muscle may block blood flow out of the ventricle which then must work hard to pump blood. As a result, the symptoms can include chest pain, dizziness or fainting.</span>
8 0
3 years ago
I'm stuck on this multiple choice problem about a base substitution mutation that increases the stability of a protein (see imag
topjm [15]

D) Frameshift is the answer of these questions

5 0
2 years ago
Other questions:
  • Suppose that every car on the road burned up about two gallons of gas a day. For each gallon of gas burned, one pound of carbon
    7·1 answer
  • Consider that the rate of enzyme activity is related to the slope of the line, δy/δx (the "rise" over the "run"), in μmol/ml • m
    15·1 answer
  • Besides a plant cell, determine what other type of cell has a cell wall?
    10·1 answer
  • What is a second order consumer
    8·2 answers
  • URGENT!! In certain varieties of chicken, an allele for black feathers (IB) is co-dominant with an allele for white feathers (IW
    11·2 answers
  • A tube called the what extends from the bladder to the outside of the body
    9·1 answer
  • The two days of the year when the Sun's rays are exactly on the equator are called _____.
    5·1 answer
  • Pls helppppppppppp tysmmm
    11·2 answers
  • Match the terms to their definition. 1. evolution genetic change in a population or species over many generations 2. lineage gro
    7·1 answer
  • 3. The radula and crystalline style of molluscs are part of the:
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!