B (i'm actually not that sure though) because A is definitely wrong, C is not correct, and D is fine i think
Teenage smoking was higher in the 70s but has lowered throughout the years. in 1997 about 25% of seniors in high school smoked. now the percentage is 6% in 12th grade, 3% in 10th grade, and 1% in 8th grade for daily smokers in 2015. But nearly 90% of reported smokers started before they were 18, and 11% of seniors reported smoking in December of 2016 and November of 2016.
Pulmonary circulation Pulmonary has to do with the lungs
The onset of puberty in females triggers the shedding of unfertilised eggs and the LINING OF THE UTERUS. The lining of the uterus is shed each month if the mature egg is not fertilized. This process is called menstruation. The first menstrual period a young girl will have marks menarche.
Specialized hormones such as progesterone and estrogens play a vital role in the development and shedding of the lining of the uterus in each menstrual cycles.
No, the person is not using harassment.
