1.

Fill in the blanks. (a) ………… is produced under the skin in early morning sunlight. (b) Deficiency of vitamin C causes a disease called ………… . (c) The substance ………… in tobacco is harmful for both the heart and the brain. (d) Taking intoxicating substances has adverse effects on the ………… .

Answer»

Fill in the blanks.



(a) ………… is produced under the skin in early morning sunlight.



(b) Deficiency of vitamin C causes a disease called ………… .



(c) The substance ………… in tobacco is harmful for both the heart and the brain.



(d) Taking intoxicating substances has adverse effects on the ………… .



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