Describe the "quickening" stage during fetal development?

Answer and Explanation:

The uterine muscles of a woman are the quick to sensing fetal motions and movements. Quickening is a first sensation movement of the foetus to the mother that may feel like a light tapping at about the 18-20 weeks for primigravida women and 15-17 weeks for para women. The sensations eventually become stronger and more regular as the pregnancy progresses until birth.

answer; i believe the correct answer is (a)0

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.