ÜDS-Sosyal 2011-2 Soru=19

Since the beginning of the industrial age, the (18)---- of
the natural environment by humankind has got even
worse. Natural resources (19)---- and waste is being
produced at a higher rate than the soil, air, rivers and
oceans can (20)----. Especially, the composition of air
has changed significantly. The burning fossil fuels such
as coal and crude oil to run power stations and motor
vehicles emit particulate matter and numerous chemical
compounds including sulphur, nitrogen and carbon
oxides. (21)---- these compounds are released
(22)---- the atmosphere, they react with water vapour to
create sulphuric and nitric acid, which turn to Earth’s
surface in the form of acid rain. It attacks the leaves and
needles of the trees and prevents photosynthesis from
working effectively, which results in forest decline.