Answer: Having the most offsprings
Explanation:
Natural selection is the differential survival and reproduction of the some of the members of the population those who have benefit of survival under the adverse conditions.
Such members of the population will survival and reproduce more offsprings than others this can be considered as fitness or survival of the fittest.
Because emergency responders cannot enter areas that are still dangerous and because it it important to check for danger to victims and responders and assessing the situation is the first step taught in first aid course and the first step is actually to call the emergency assistance.
1. asthma
2. lung cancer
3. COPD (Chronic Obstructive Pulmonary Disease)
4. pneumonia
5. autism
White blood cells which are also called leukocytes, are an important part of the immune system. There are five major types of white blood cells that are neutrophils, lymphocytes, eosinophils, monocytes and basophils.
These cells help fight infections by attacking bacteria, viruses, and germs that invade the body.
White blood cells originate in the bone marrow but circulate throughout the bloodstream.
An average normal range is between 3,500 and 10,500 white blood cells per microliter of blood (mcL)