Which of the following substances must be present in the soil for growth of a healthy green plant? by Sunday | Nov 23 | Biology WAEC | 0 comments A. Amino acids B. Carbon C. Glucose salts D. Magnesium ions Correct Answer: Option D D. Magnesium ions Users Also Read These:If the cross of a red-flowered plant with a white…A green snake in green grass is able to escape…The stunted growth of a leguminous plant suffering…One habit which people living with HIV/AIDS must…Which of the following fertilizers should be applied…