artificial – adj. not natural or real

mobile – adj. able to be moved

source – n. someone or something that provides what is wanted or needed

according – adv. as stated by or in

fund – n. a plan or program

error – n. a mistake or problem

cloud – n. the large computers (called servers) that you can connect to on the Internet and use for storing data

escalation – n. to become worse or to make (something) worse or more severe

ladder – n. a series of steps or stages by which someone moves up to a higher or better position

turtle – n. a reptile that lives mostly in water and that has a hard shell which covers its body