Hello and thank s that i am here

I am going to buy a used pick up and i need help

can someone tell me what are these in the engine s photos

The green pipe goes inside the cabin and it is free at the driver s closet

Thanks in advance 

Thakns for the reading (it mean that someone has try to help) So i went to my mechanic and told me that the first i about mice (to sent thme away)

Second the pipe now is out it was not necessary

Anyway thanks