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