1. One of the main causes of pollution is the _______ fumes from cars.
clouds
exhaust
mess
smoke
Scientists are increasingly worried about the hole in the ozone ______.
layer
level
blanket
cover
The weather around the world is changing because of ______ warming.
worldwide
international
world
global
Recycling is good, so don't throw ______ bottles and newspapers with your regular rubbish.
away
back
off
past
It's very difficult to recycle things here. The nearest bottle ______ is miles away.
collection
deposit
point
bank
We're quickly using ____ all the world's natural resources. If we don't slow down, there will soon be severe shortages.
away
up
out
off
Many animals are dying out because we are destroying their natural ________.
inhabitants
habitats
habitations
habits
A lot of supermarkets are starting to offer _______ foods that were not grown using pesticides or chemical fertilizers.
free-range
natural
organic
nutritious
______ rain has destroyed many of the trees in our nearby woods. They say it's because of factories in the USA.
Poisonous
Polluted
Unnatural
Acid
One of the best ways of protecting the world's resources is to avoid _______ water and electricity.
losing
using
wasting
missing
There still isn't a safe way of storing high-level nuclear ______ from power plants.
dumps
fallout
waste
ashes
We've got to stop _______ down tropical rainforests, which are so important to the global climate.
logging
cutting
mowing
thinning
Traffic _______ is a big problem in city centers.
driving
jam
congregation
congestion
