this is a complete question?
Modern humans have been around for 200,000 years.
No. They are a separate species - from another planet, the "Ood Planet" - who have been enslaved by humans.
Apart from Earth, no humans have ever been on another Planet, whether they be Canadian, Irish or Bengali.
Mars is the red planet. No robots have been seen there. Humans have sent robots there, however, to measure water levels, scan for life, and take pictures.
The planet is worse off with humans.
Earth. Humans have not set foot on any other planet. We have been on the moon, but the moon is not a planet, it is a satellite of earth.
Yes, apart from earth. (Technically the moon is not an actual planet, so technically the only planet humans have been on is Earth). There is talk of sending a manned mission to mars, though it seems unlikely.
Earth is the ONLY planet suitable for humans.
not sure i think humans have legs know i have visted the humans planet 'earth' nice planet.
It is highly likely that humans originated in Africa, and so yes, the first humans would have been black.
If you mean which planets that Humans have set foot on then Earth is the only one. We have went to the moon, but it does not count as a planet. Human made space craft have been to every planet in the Solar System. We have on en route to Pluto right now.
Humans are not destroying the planet or the environment. It is doubtful they would be able to destroy the planet. It is certain they are having an impact on the present environment which is significantly different to destroying it. Environments are changed. They always have been. The reason why environmentalists strive to preserve the current environment is to keep it in equilibrium so humans can live longer.