Blisters are a sign of which classification of burn?
a.
first-degree burn
b.
second-degree burn
c.
third-degree burn
d.
none of the above

How do nicotine and tobacco cause cancer? by decreasing blood-sugar levels by damaging or changing a cell's dna by increasing heart rate by increasing phlegm and mucous production

Ijust want the meaning to life (no wrong or right answers i just want your true opinion)

True or false mucous membranes destroy pathogens on the outer body surface, at body openings.