A controlled variable is essentially what is kept the same throughout the whole experiment.
Answer: Areas surrounded by water would have less of a change in temperature
throughout the year.
Explanation: Water has a higher specific heat index so it's temperature will be slow to rise. Water also holds heat longer than most material hence areas sorrounsing water will have less temperature change throughout the year.
The neutralization reaction among all the reactions would be the one between an acid and a base to produce salt and water.
<h3>What is a neutralization reaction?</h3>
It is a reaction involving an acid and a base to produce salt and water.
From the list of reactions, the only reaction that involves acid and a base with salt and water being the products is the first reaction.
Thus, the neutralization reaction is represented by the equation:

More on neutralization reactions can be found here: brainly.com/question/20038776
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Its a form of anaesthesia used by dentists
hope that helsp