Trees at the beginning of the runway!

Hello,

There are several airports where the program puts trees right at the beginning of the runway thresehold!!! Very tall trees right before landing, really??? Trees??? Conifers in Cancun??? 
Some other airports don't have trees but they do have an eternal cloud of mist, again, right before the touchdown area. The meteorlogial settings don't matter, the mist is always there. These things happen in certain airports only (always the same).
It is obviously not only very difficult to land like this, but also very unrealistic. Is it possible to remove these annoying obstacles?

Thank you!