One...... I know is D
Two...... is B
Try and put in Key details on your speech and why the vaccine helps as well as some components how the vaccine helps the immune system
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Explanation:
1. dimension - the magnitude of something in a particular direction (especially length or width or height) magnitude - the property of relative size or extent (whether large or small); "they tried to predict the magnitude of the explosion"; "about the magnitude of a small pea"
