Questions with the keyword 'plant'

• We breath in oxygen and let out the waste air carbon-dioxide. Why is it that plants breath in the waste air by Resh@science and 1 other. to Chris, Hayley, Jimi Comments: (so far, 2s comments )
• can you grow plants in space by bluebestie021 and 4 others. to Chris, Hayley, Jimi, Maddison, Omur Comments: (so far, 3s comments )