How do you cancel a task/quest on tapped out I seem to have tapped the..

At the end of the 12 hours it just gives you experience points. It doesn't do anything bad but it does not give you any Money. They have no way to cancel which I feel is a big flaw because I tap on the wrong job all the time.

Tap the "Move" button and then tap the farm, then tap the Box icon which will put the farm into storage. Then tap the box icon (bottom left) to take the farm back out of storage, and your task will be gone. Warning: you will lose the Money that you spent to start the task though.

The "end of humanity" is just a joke BTW, it won't end your game or anything. (Look up "triffid" on Wikipedia).

"end of humanity" is bad. It gives you a bunch of experiance points with no Money.
This makes level progression speed up, but if you are trying to get 5 stars so you get
% bonuses it means you'll have to plant more tree's, buy more land for the trees, etc... When the next level becomes reached. In the early levels (~25) it is difficult to get 5 stars because of the shortage of funds and limited land space to put purchases. Wait and accumulate more Money and buy expensive plants like that $2000 plant sculpture thing since it gives you a bunch of tree hugger points without using a bunch of land area. This will allow you to get the 5 tree hugger star faster because you won't keep having to buy land. Also, jam the Items as close as possible so you can get 5 stars and start earning % bonuses. Once you have 5 stars in all the categories you wiil get more money and then can afford more land and move suff arround (I have never done this though, because I'm trying to get those expensive multi-million $ items). When a new level is reached, wait before tapping the $'s. Buy what ever is needed to get back upto 5 stars. Then collect the $'s. Doing this will give you the extra Bonus %.

Is it possible to remove a quest? I want to remove the Springfield Heights quest,because it is taking up so much time and it is so slow,but I can't find a way.