Questions with the keyword 'plants'

• how do plants make oxigen by 823fddk47 to Yannis Comments: (No comments so far )
• Could we use osmosis to filter sea water and plants tons of trees in the desert and slow down global warming. by Pheonix to Ciara, Elaine, Golnaz, Gonzalo, Yannis, Yvonne Comments: (so far, 2s comments )