The first line of defence (or outside defence system) includes physical and chemical barriers that are always ready and prepared to defend the body from infection. These include your skin, tears, mucus, cilia, stomach acid, urine flow, 'friendly' bacteria and white blood cells called neutrophils.
- On the NFPA 704 fire diamond 4 is the most severe rating in the flammability, health and reactivity division.
- A numerical scale from 0 to 4 is used in the blue, red, and yellow areas (health, flammability, and reactivity).
- A value of zero denotes that the substance is practically risk-free, whereas a grade of four denotes serious danger.
<h3>What is NFPA?</h3>
- The National Fire Protection Association is a global nonprofit organization whose mission is to end economic, physical, and other losses caused by electrical, fire, and related risks.
- When a small group of concerned professionals first convened in Boston in 1896 to discuss the disparities in fire sprinkler system design and installation.
- This was the beginning of the NFPA's process for creating codes and standards.
- In an effort to reduce the likelihood and consequences of fire and other risks, the NFPA produces more than 300 consensus rules and standards.
- The world adopts and uses NFPA rules and standards, which are managed by more than 250 Technical Committees made up of over 8,000 volunteers.
Learn more about NFPA here:
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Answer: Environment is the major factor to the well-being of a y individual. Living in an healthy and well organized environment helps individuals to enjoy long life span as they'd be far from diseases.
Explanation:
Environment is the major factor to the well-being of a y individual. Living in an healthy and well organized environment helps individuals to enjoy long life span as they'd be far from diseases. A case study is mosquito. An environment with stagnant water breeds mosquitoes, and which in turn would lead to malaria for the individual living there. It is vital to keep the environment neat for out health sake
It would depend on fast you're walking
