Answer:
Their shelf life really depends on whether they've been cut. Store cut brownie squares in an airtight container at room temperature; they're best eaten within 1 to 2 days. A whole pan's worth, uncut and well wrapped in plastic, will keep at room temperature for up to 4 days, or in the freezer up to 3 months.
Explanation:
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A) the exchange of gases throughout the body
The receptor for smells are known as tastebuds which is answer D
Probably A (?) Because the chef is using more than required, meaning it'll cost more to make.