Homework Help Forum: science

Posted by dominique on Tuesday, October 6, 2009 at 12:06pm.

please could someone help me with these question please i have loked on websites but i am still stuck. true or false and i need to write a comment why:- plants photosynthesise 24 hours a day respiration uses up carbon dioxide thanks guys!

• science - drwls, Tuesday, October 6, 2009 at 12:13pm

  false (photosynthesis requires light) true (carbon dioxide is consumed and oxygen is produced)

  
  

• science - DrBob222, Tuesday, October 6, 2009 at 12:15pm

  First link I tried: photosynthesis does not occur at night. http://www.newton.dep.anl.gov/askasci/bot00/bot00191.htm If you are talking about respiration of humans, we exhale CO2 so we aren't using it up. Plants use CO2.

  
  

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