False, injuries are spontaneous and can happen to anyone flexible or not. However I do not know the statistics behind flexibility effecting injuries.
The immune system fights off the pathogen by Leukocytes also known as white blood cells. When a pathogen enters the body the immune system becomes alert to it and sends out sends out the Phagocytes (a type of Leukocytes) which engulfs the pathogens.
5 ..................................................... Explanation:
<span>The correct answer is letter C.
Increasing automobile use is not a strategy for improving the long-term health
of cities. Automobile use produces carbon dioxide emissions at high levels
which add up to the destruction of the Earth's atmosphere. 30-40% of carbon
dioxide emissions are caused by this and other human activities (e.g. factory
industries, mining).</span>
