(3)
Petroleum was form under the form...formed
ground many millions of year ago.
(a)
Plant and animals living in the sea
(b)
sank to the sea bed when they die.
(c)
There remains, mixed with sand and
(d)
mud in layered deposits, build up
(e)
slowly over the years. The combine
(f)
action of heat, pressure or bacteria
(g)
turned this deposits into petroleum.
(h)
editing error
No answers have been given to this question yet :(
Similar questions