Answer:
The correct answer is b. Alcohol consumption and smoking can affect men's sperm and are associated with known birth defects.
Explanation:
According to different observational studies, it has been concluded that approximately the concentration of sperm in optimal conditions, taking into account its morphology and movements, is reduced by 13% for smokers compared to non-smokers. In addition to 25 other studies of the same type that have been carried out, which lead to the conclusion that the consumption of substances such as alcohol and tobacco, are harmful to male fertility and can also lead to the development of some inherited disorders such as cancer Autism spectrum disorder, among others.
Answer:
Option C
Explanation:
According to World Health Organization(WHO), a threatened abortion is pregnancy related bloody vaginal discharge during the first half of pregnancy without cervical dilation.
It is most common with women who bear children at much older age. The chances of having a threatened abortion increases as a woman's age increases.
The common symptoms are the ones that the woman has; bright red bleeding,cramping etc.
The patients should be monitored so as to avoid progression into an inevitable abortion. Also, she should be giving analgesic drugs to relieve her pains. The patient should repeat pelvic ultrasound weekly and also, abstain from sex.
<span>b. They release oxygen that organisms use to breathe.</span>
