It is A: a chemical reaction, due to the acid activity (acetic acid)
The pH will decrease because lemon juice is very acidic meaning it would bring the pH level down to a more acidic value.
<span>This is the "Follicle stimulating hormone (FSH)." This FSH hormone is essential to the reproductive system in general.
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<span>The answer is general senses. These are the senses which
are professed by reason of the receptors distributed all over the body such as temperature,
touch, and starvation, instead of knotted to a particular structure, like the
special senses - sight or hearing.</span>