For emergency like cut in others
Don't smoke and especially do not drink, (as well as stay away from chemicals, pollution, pesticides) it may cause learning disabilities and abnormalities in the baby.
This means that ventilation is greater than perfusion.
Answer:The immune system is a network of cells, tissues and organs that work together to attack pathogens that try to invade your body. Bacteria, parasites and fungi that may cause infection meet a system of immune soldiers, including T-lymphocytes, macrophages and neutrophils.
Explanation: