Explanation:
1)= always starts with the letter C02= carbondioxide....
<span>responsible for transporting oxygen-depleted blood away from the heart and back toward the lungs.</span>
They usually can't speak the "hosts" language very well and they also don't understand the culture.
so your answer is <span>predictive and explanatory uncertainty
</span>
A. it typically occurs 14 days before your next period. Therefore is is the closest answer.