Arsenic has been known about since ancient times, so there is no record of who 'found' it.
Look at the chemical symbols for each and you will find that the answer is Wasp
Since arsenic is in the 4th period on the periodic table, it has 4 electron shells. Its electron configuration is: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3
They would first do a DNA scan then a chemical scan.
As arsenic was known to ancients, it is impossible to say where it was discovered. Gerber, an Arabian alchemist, first isolated it, but a date sometime in the 8th or 9th century is all that can be cited with no location data known. It is believed that Albert the Great, Albertus Magnus, was the first European to isolate arsenic, which he did in 1250. Again, no location data for the work is recorded. A link can be found below.
It is necessary to apply methods of analytical chemistry.
Depending on what you believe might be the name of the first humanoid on earth, that might be the first person to find a blooming plant.
Adam aka the first person to walk on the planet Earth
difficult to find out who was the first
The first person who got abs was the first person on earth. Everyone has abdominal muscles, but not every person has developed abdominal muscles.
Cortez
Find a gas mask.
Arsenic poisoning can indeed lead into the death of the person. A lot of times you may get arsenic poisoning from insecticide exposure. Symptoms of arsenic poisoning includes nausea, stomach pains which is followed by circulatory collapse. If the exposure is bad enough it can lead into the destruction of red blood cells and cause kidney damage. You may also feel weak, find yourself having skin disorders, anemia, as well as disorders to your nervous system.