People who talk and sing to plants are crazy ,according to Bragmar,a agriculture expert,"In fact ,singing and talking to some plants''makethem grow better''.says Bragmar.The reason is quite simple . when we sing or talk to plants ,we breather out carbon dioxide(co2)what plants need to live or grow. plants take in the carbon dioxide during sunlight hour and produce oxygen which people need to live. singsing and talking are effective,however,only during the night.

crazy---crazied;a---the;quite---quitly;breather--- are breathering;
what可删除或改成which或者that;or---and;however,only during the night---only expect during the night;