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
Shkiper50 [21]
3 years ago
8

The oxygen build-up in the atmosphere was caused by

Biology
1 answer:
Y_Kistochka [10]3 years ago
3 0

Answer:

Actually, The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen. "What it looks like is that oxygen was first produced somewhere around 2.7 billion to 2.8 billon years ago. Harmful cyanobacteria blooms may affect people, animals, or the environment by: y blocking the sunlight that other organisms need to live. Cyanobacteria blooms can steal the oxygen and nutrients other organisms need to live. y making toxins, called cyanotoxins.

Explanation:

You might be interested in
Which statement describes a deciduous tree?
Tanzania [10]
Trees that drop their leaves in colder seasons, in order to conserve water.
7 0
2 years ago
Why is the study of human geography important?
stepan [7]
It is important because we need to learn the environment, what is around us.
4 0
3 years ago
Are zombies biotic or abiotic?
kaheart [24]
Abiotic because biotic is living. So abiotic is the opposite.
7 0
3 years ago
Read 2 more answers
What does a cell try to do if the area around it changes? i cant find the answer anywhere...​
AURORKA [14]

a cell adapts using natural celection in the long term

in the short term, look at this Wikipedia article.

https://en.wikipedia.org/wiki/Cellular_adaptation

5 0
3 years ago
Read 2 more answers
Breaking down food into simpler substances that the cells can use is the process of ____
Mandarinka [93]
I think it is called mechanical digestion.  Or alas, chemical digestion.  One of those.  Or both!

Hope helps-aparri

(thank yous are welcome)

7 0
3 years ago
Other questions:
  • What is the best explanation for the microvilli on the apical surface of the proximal convoluted tubule (pct)?
    9·1 answer
  • How long is the life expectancy of dolphins
    9·1 answer
  • Light energy is converted to chemical energy through the process
    6·1 answer
  • Which claim would most likely be considered valid? A company that says its vitamin water has tested better than most energy drin
    6·2 answers
  • Viruses and bacteria are both microscopic and can both cause disease. Viruses differ from bacteria in that all viruses
    8·1 answer
  • Define anthropogenic in your own words and give example <br>​
    11·1 answer
  • Can someone help me out..?
    13·1 answer
  • In a ________, multiple enzymes are working together in a multistep process. feedback loop metabolic pathway allosteric pathway
    8·1 answer
  • A plant is placed near a window. Instead of growing straight up, the plant grows to the side. What is this plant demonstrating?(
    8·1 answer
  • In manipulative studies, it is necessary to have an experimental group and a ________ group.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!