Manufacturers add sugars to their cigarette sometimes in the form of honey, etc. This makes cigarettes more enjoyable, particular and addictive in a way.
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B - Enzymes act as catalysts because they lower the activation energy
Answer:
Biological hazary are natural scenarios involving disease, disability or death on a large scale among humans, animals and plants due to micro-organisms like bacteria, or virus or toxins.
The H1N1 virus (Cause 9f Swine flu) is believed to have begun its deadly journey in pigs from a small region of central Mexico in January 2009. By March, the first cases were reported in California and Texas. By June, it was in 74 countries across the globe. A year later, when the WHO declared an end to the pandemic, between 151,700 and 575,400 people had died.
A massive global vaccine effort led by the US helped end the pandemic, but the H1N1 virus is still with us. Every year it circulates as a seasonal flu, causing sickness, hospitalisation and dead
The answer is B: 'the smoke that results is toxic'. An example is the burning of domestic garbage, which remains a common practise, particularly in developing countries. This practice can release g<span>reenhouse gases like carbon dioxide and also tiny particles and toxic chemicals that can harm human lungs.</span>
