QUES: This will be explained

correct the punctuation.

CORRECTED: This will be explained.

QUES: We do our utmost to combat and prevent spreading of diseases

correct the punctuation.

CORRECTED: We do our utmost to combat and prevent spreading of diseases.

QUES: We will use soft metals aging accelerators and additives in food and drink also in the air They will be overwhelmed by poison wherever they go or stand

correct the punctuation.

CORRECTED:
We will use soft metals, aging accelerators and additives in food and drink, also in the air. They will be overwhelmed by poison wherever they go or stand.