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
Nataly [62]
3 years ago
7

Which process do scientists think provided Earth with an oxygen-rich atmosphere?

Geography
2 answers:
zaharov [31]3 years ago
8 0

Answer:

photosynthesis

So how did Earth end up with an atmosphere made up of roughly 21 percent of the stuff? 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.

Explanation:

MrMuchimi3 years ago
4 0

Answer:

photosynthesis

Explanation:

Photosynthesis: Is the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

You might be interested in
How are the animals in a desert ecosystem most likely to differ from the
True [87]

Answer:

C

Explanation:

3 0
2 years ago
Read 2 more answers
How is it that the open ocean produces the highest net primary productivity of Earth's ecosystems, yet net primary productivity
yulyashka [42]

the average story is 10 feet and the car is below ground so it would be negative. i assume the answer would be -20 feet

5 0
3 years ago
10. The position of a place north or south of the equator is measured in A. meridians of latitude. B. terms proportional distanc
Bogdan [553]

The position of a place north or south of the equator is described
in terms of its latitude.  Since we're talking about the surface of
a sphere, latitude is an angle, and its value is given in angle
measure. 

Any unit of angle is fine ... degrees, radians, grads, etc., and if
you're given an angle in one unit, you can always easily change
it to a unit that you like better ... but 'degrees' has been the unit
used most often for latitude, and longitude too, practically since
the whole system was invented a few hundred years ago.

For parts of an angle smaller than a whole degree, 1/60 of a
degree (minutes) and 1/3600 of a degree (seconds) were used
traditionally for the first couple hundred years.  But that ponderous,
inconvenient system is rapidly giving way now to plain old decimal
degrees, probably because those are easier for the computer to handle.

4 0
3 years ago
Read 2 more answers
Sara's father is a grocer and her mother is a doctor. What is the difference between both the occupations?
Galina-37 [17]

Answer:

is this a riddle and if it is the answer is sandiwch

Explanation:

4 0
2 years ago
What features suggest wheather erosion or deposition created a landform?
11111nata11111 [884]
Not quite sure what you're asking, but erosion and deposition do create land forms. For example: erosion along the coastline may result in the formations of arches, stacks, stumps, wave cut platforms, caves, etc. Deposition, different amount of it and in certain areas, under the influence of either destructive or constructive waves, will form beaches - ones with a lot of beach, through a lot of deposition, or slopes beaches where destructive waves have crashed upon the beach. Hope this is what you're looking for. 
8 0
2 years ago
Other questions:
  • Some map keys show elevation using 2 measurements what are these 2 measurements? Plz help!
    12·2 answers
  • When an oceanic plate converges with a continental plateWhen an oceanic plate converges with a continental plate, __________.
    7·2 answers
  • 5. Suppose that every three months, on average, an earthquake occurs in a certain region. Assuming this is a Poisson process, wh
    7·1 answer
  • Which of the following is an example of stimulus diffusion?
    5·2 answers
  • Which of these are correct about Wheat? A. This is the second most important cereal crop. B. This crop requires a cool growing s
    14·2 answers
  • What would the clock time be like for 3 people at different latitudes who are on the same longitude line?
    5·1 answer
  • If you started in the city of D and traveled to the city of A, what direction would<br> you go?
    8·1 answer
  • Which of the waves from an earthquake are able to travel through both solids and liquids and behave like a compressional wave?
    15·1 answer
  • SOMEONE PLEASE HELP ME! Appreciated very much!!!! I need this badly, stuck on it forever
    6·1 answer
  • PLEASE HELP WILL MARK BRAINLIEST
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!