Electronic Waste (E-waste)

Question 1

Groundwater

Answer 1

water that collects below the surface of the earth

Question 2

Come into

Answer 2

If someone comes into money, property, or a title, they receive it as a result of the death of a relation:
She came into a bit of money when her grandfather died.
Workers in this company often come into contact with heavy metal

Question 3

Discard (cloth/electrical equiment)

Answer 3

to throw something away or get rid of it because you no longer want or need it:
Discarded food containers and bottles littered the streets.