Riddle me this...

I have two arms,
but fingers none.
I have two feet,
but cannot run.
I carry well,
but I have found
I carry best
with my feet OFF the ground.
What am I?

My thunder comes before my lightning,
My lightning comes before my rain,
My rain dries all the land it touches.
What am I?

When I am needed, I am thrown away;
When my purpose has been served, I am readily retrieved.
What am I?

You yourself own me, but use it the least,
'Tis others who put me to use, though I'm yours.
What am I?
Pernounced as one letter,
And written with three,
Two letters there are,
And two only in me.
Im double, Im single,
Im black blue and grey,
Im read from both ends,
And the same either way
what am I?
The ultimate riddle
My thunder comes before my lightning,
My lightning comes before my rain,
My rain dries all the land it touches.
What am I?
If anyone can answere all of these then I would hold them to be the smartest person alive.