Humans increase our food supply growing crops, and raising cattle
No. There were tornadoes on earth before humans existed. Some have tried to link an apparent increase in tornadic activity with climate change caused by humans, but in reality there has been no such increase in activity.
Like most bright stars, humans have been able to see Betelgeuse for as long as humans have been around, so nobody could be said to have discovered it.
Railroads have been able to increase their profitability since passage of Staggers in the face of strong competition from trucks and declining rates only through increased productivity.
You can't, although it has been rumoured that you will be able to do this in 1.8.
Humans have not been able to find out when sharks nest. Did you know humans know more about outer space than sea life?
Humans and wolves have been able to communicate with dogs and wolves for thousands of years. Wolves in the wild are suspicious of humans and will likely not interact if not necessary.
Without speech humans would not have been able to communicate until the invention of writing.
To my knowledge it is a disease that infect humans. Although there have been several cases where they have mutated to be able to affect humans such as the case with HIV if I am not mistaken.
Not So far as I have been able to ascertain, I have had RA myself for as long as I can remember and have never been able to notice any difference due to climate or temperature.
it has allowed humans to create civilizations that they wouldn't have been able to other wise.
Humans don't cause cyclones. They are a natural event. There have been proposals that global warming as a result of human greenhouse emissions would increase the frequency or intensity of cyclone, but that still wouldn't mean humans are directly causing cyclones.
Of course they can, if they couldn't then you wouldn't of been able to walk to your computer. (I found this reply a little harsh, so I edited it)