earth

Why is the Earth's atmosphere rich in oxygen and poor in carbon dioxide?

  1. 👍 0
  2. 👎 0
  3. 👁 135
asked by NAncy
  1. Photosynthesis over billions of years, mostly by primitive life forms such as algae. This process removes CO2 and releases O2.

    CO2 is, however, making a comeback.

    1. 👍 0
    2. 👎 0
    posted by drwls

Respond to this Question

First Name

Your Response

Similar Questions

  1. geololgy

    Earth and Venus are so similar in size and overall composition that they are almost “twins.” Why did these two planets evolve so differently? Why is Earth's atmosphere rich in oxygen and poor in carbon dioxide, whereas the

    asked by anonymous on May 24, 2011
  2. Astronomy

    Why is the greenhouse effect on Earth not as drastic as on Venus? There is no carbon dioxide in Earth’s atmosphere. The oceans dissolved much of the carbon dioxide. Earth is smaller than Venus so it can’t hold the gases in the

    asked by Sandra on October 27, 2015
  3. Astronomy

    Why is the greenhouse effect on Earth not as drastic as on Venus? -There is no carbon dioxide in Earth’s atmosphere. -The oceans dissolved much of the carbon dioxide. -Earth is smaller than Venus so it can’t hold the gases in

    asked by Sandra on October 28, 2015
  4. Science

    1.)Why is Earth’s temperature just right for life? (1 point) A.)Earth’s core is hot enough to heat Earth’s surface. B.)Earth’s magnetic field creates suitable temperatures on Earth’s surface. C.)Earth’s crust is warmed

    asked by YRN DJ on December 7, 2015
  5. Science

    Can someone please please help me? I don't have a text book, i have a online book and it isn't working. Can someone please be nice and help me? Science isn't my subject! 1. Why is Earth’s temperature just right for life? (1

    asked by Mandy on January 21, 2014
  6. biology- photosynthesis

    There is a distinct oscillation of CO2 during each year as CO2 is added to the atmosphere each winter or removed from the atmosphere each summer. Explain what specific cellular processes lead to these changes in CO2 level. You

    asked by alex on August 6, 2013
  7. Chemistry

    Just having some trouble with this chemistry problem.. Thanks for help! Toxic carbon monoxide (CO) gas is produced when fossil fuels such as petroleum burn without enough oxygen. The CO can eventually be converted to CO2 in the

    asked by Sara on January 15, 2013
  8. science

    3. How would the carbon cycle be affected if all producers were removed? (1 point) Carbon compounds in animals would not be broken down to release carbon dioxide back into the atmosphere. Carbon would not have a way to enter the

    asked by asha on January 21, 2014
  9. can you help me with one science question Ms. Sue

    3. How would the carbon cycle be affected if all producers were removed? (1 point) Carbon compounds in animals would not be broken down to release carbon dioxide back into the atmosphere. Carbon would not have a way to enter the

    asked by TTR+S<3 on January 20, 2014
  10. Earth's Dynamic Atmosphere

    The Sun heats the Earth. The Earth then reradiates this heat energy back into space. However, the amount of _______ in the air plays a key role in absorbing much of this exiting heat and warming Earth's atmosphere. A. carbon

    asked by Prisila on December 26, 2017

More Similar Questions