Soaps are alkali , which is why they are bitter and slippery . Alkalis have a pH (potential hydrogen ) of 7-12 . Lemon juice is acidic which would neutralize the alkalinity of the soap . Acids have pH of 1-6 . It would cause the pH of the soap to drop .
Answer:Most experts rejected this revolutionary theory, In Europe at the time, all scientific knowledge and many religious teachings were based on the arguments developed by classical thinkers. If Ptolemy's reasoning about the planets was wrong, they believed, then the whole system of human knowledge might be called into question.
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Maybe immune system and respiratory system
Answer: I think it is probably c
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