B, proton is positive and it does not represent the symbol
Answer:
Direct contact.
Explanation:
Since it was spread through facial tissue, physical contact is needed.
Hope this helps! :)
The reducing sugars are mainly monosaccharides where all polysaccharides are non-reducing sugars. The reducing sugar can reduce the capric ions of the Fehling or the Benedict solution into the cuprous ions whereas, the reduction of cupric ions into the cuprous ions is not achieved in the non-reducing sugars.
The value of the dependent variable is based upon changes in the values of the independent variable.
<h3>What is the dependent and independent variable?</h3>
The term independent variable has to do with the variable that is being intentionally manipulated in an experiment. The dependent variable is the variable that changes in value as the independent variable is manipulated.
Now, the question is unclear however, we do know that in an experiment, the value of the dependent variable is based upon changes in the values of the independent variable.
Learn more about independent variables:
brainly.com/question/1479694
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