This condition is inherited<span> in an autosomal dominant pattern, which means one copy of the altered </span>gene<span> in each cell is sufficient to cause the disorder. At least 25 percent of </span>Marfan syndrome<span> cases result from a new mutation in the FBN1 </span>gene<span>. These cases occur in people with no history of the disorder in their family.</span>
Licensing and certification are important requirements because, If you are not licensed to do a certain job, it is considered as an illegal thing to do. Unless the work you have doesn't require you any type of license. Certifications are just badges or just a type of thing that gives you credentials and proves that you are fit to do such job.
Fog disrupts vision by preventing you from seeing what’s ahead. Rain and snow/ affect vision as well. Rain affects steering since you can hydroplane and snow/ ice causes tires to lose traction (car slides)
Blood and oxygen I’m pretty sure if it’s one answer then it should be blood