1) Complete the sentences with these words :
a) The new factory isn't going to ____________ pollution.
b) Nuclear reactors can be a ____________ to life on the planet.
c) What is the ____________ of methane gas in theatmosphere?
d) ____________students are interested in the game next Saturday.
e) Filters stop the ____________ of gas into the atmosphere.
f) Our factory is building a new ____________.
g) My grandmother has ____________on his farm.
h) ____________ is a serious problem for many cities.
i) The production of vegetables is ____________ in our area.
j) Leather is ____________ material to produce shoes.