Physical Science

1) Carbon dioxide is obtain from the air and changed into carbohydrates oxygen during the process of

fossilization.
respiration.
digestion.
photosynthesis.

2) Which sequence of processes must occur for an atom of carbon to go from car to tree?

respiration, decomposition.
combustion, photosynthesis.
fossilization, decomposition.
fossilization, photosynthesis.

asked by Amber
  1. Please guess yourself and put an arrow beside your answer. <------
    I am sure you know.

    posted by Damon
  2. Can someone help me =.=

    posted by Amber
  3. I Guess....

    1) respiration.
    2) fossilization, photosynthesis.

    posted by MileenaLuz
  4. 1 is photosynthesis
    Plants take in CO2 and produce O2

    2 is combustion - photosynthesis (the giveaway is the car burning fuel)

    posted by Damon
  5. a
    d
    d
    b

    posted by Anon
  6. thanks anon!!! 100!!!

    posted by Anonymous
  7. If you are in Connexus, these are the answers.

    1.) A

    2.) D

    3.) D

    4.) B

    posted by Pseudonym
  8. For everyone who is stupid answers are


    1. A

    2. D

    3. D

    4. B

    posted by john
  9. 1.a
    2.d
    3.d
    4.b

    posted by Secret
  10. Is this for unit 3 lesson 7?

    posted by Myla
  11. 1.A
    2.D
    3.D
    4.B
    i got 100%

    posted by im just a girl that has no friends
  12. 100!

    posted by Anonymous
  13. John calls us stupid, when he/she is stupid as well. They're looking up answers on a homework help site, but this homework help site is mostly just cheating now.

    posted by Lizard

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