<span>If you hold your breath, <span>carbon dioxide </span></span><span>builds up in your blood
The reason for this is:
When you exhale or breathe out, you exert or let out carbon dioxide. So, if you were to hold your breath, it would build up because it is not being exerted.
Hope this helped you!
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Yes, generally if a sentence contains the conjunction ‘if’ then it’ll be complex.
Flint, Michigan and Birmingham<span>, Alabama—1963. The </span>Watsons<span> as we know them hail from two very different parts of the country. Dad's family was all born and raised in Flint, Michigan, while Momma's family is from </span>Birmingham<span>, Alabama.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
Answer: D, change 'though' to "tough"
