【单选题】All the following are macronutrients EXCEPT:
【单选题】下列区分物质的方法中不正确的是( )
B.
石灰水与碳酸钠溶液:滴加酚酞溶液,看是否变色
C.
氧气与二氧化碳:用带火星的木条,看是否能使木条复燃
【简答题】Describe the relationship between B vitamins and macronutrients.
【判断题】Macronutrients include minerals and vitamins.
【单选题】下列区分物质的方法中不正确的是( )
B.
石灰水与氢氧化钠溶液:滴加酚酞溶液,看是否变色
C.
氧气与二氧化碳:用带火星的木条,看是否能使木条复燃
【简答题】Nutrients are classfied macronutrients and micronutrients.
【判断题】Macronutrients are more important than micronutrient s.
【判断题】Macronutrients include organic and inorganic chemicals.
【判断题】We can not get along without macronutrients.