Because it is to close to the sun, and lack of nitrogen and oxygen which we need to survive.
Cadmium, lead, and mercury are toxic heavy metals; arsenic is a toxic semi-metal. All of these are extremely dangerous to human health.
The medical answer is that you risk your life with Hg (mercury) poisoning. It feels not as cool as water; it makes your hand feel light (buoyancy). Although how I know that, I won't tell.
It is not particularly important for human or other life.
Hg is the chemical symbol for the metal Mercury.
17%
no
most definately, way to hot to sustain human life
Saturn is in space and has no fluid or solid land known or whatsoever.
scorched.....it's too hot to sustain human life on Mercury
what are the factors that determine when a substance is toxic and unfit for human consumption
As many as can get hold of it, I'd imagine.
Will become unfit for human consumption
Yes, many the planet is very inhospitable for human life.
Jupiter does not have any life on it. This is because it is unfit for life to live on it.
what made the tracks on planet mercury is rover, the space robot, who was sent from the nasa space station to look for any sign of human life on planet mercury.
This is already in effect nowadays. The FDA allows companies to sell genetically modified food, which theoretically is unfit for human consumption due to potential health reasons.
No human explorations has been nor can be on Mercury.