A vaccine is a biological preparation that provides active acquired immunity to a particular disease. A vaccine typically contains an agent that resembles a disease-causing microorganism and is often made from weakened or killed forms of the microbe, its toxins, or one of its surface proteins.
Answer:
The heart consists of four chambers in which blood flows. Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium.
Explanation:
The woman skeleton has a wider pelvis than the male
Adrenaline and Cortisol (A) are the main two (2) hormones associated with stress
I hope that helped :)
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.
