The decay equation is of the form

where
m(t) = the mass remaining after t minutes
m₀ = the initial mass
k = constant
Because the half-life is 3 minutes, therefore

Therefore
-3k = ln(0.5)
k = ln(0.5)/(-3) = 0.231
Because m₀ = 16 mg, the time, t, for the mass to decay to 1.0 mg is given by

Answer: 22 min (nearest integer)
The americans began to kill them all for their fur, killing the animal to sell its fur & leaving to actual body to rot away or for other animals to eat it
Answer:
malaria is carried by a particular mosquito, true.
Scalp ringworm is very contagious, true
Answer:
(1863-1914) In an event that is widely acknowledged to have sparked the outbreak of World War I, Archduke Franz Ferdinand, nephew of Emperor Franz Josef and heir to the Austro-Hungarian Empire, is shot to death along with his wife by a Serbian nationalist in Sarajevo, Bosnia, on June 28, 1914.