BEGC-131
[4]
in today world some
B) Use the following words in sentences of
1x5=5
your own:
(i) Inaccessible
(ii) Dwindling remote
(ii) Disastrous
the most macces
regions
(iv) Sustain
(v) Devastate
Answers
Read the following passage and answer the questions below.
Trees are vital for life on earth. They give us oxygen, store carbon, stabilise the soil
and give life to the world’s wildlife. They also provide us with the materials for tools
and shelter.Not only are trees essential for life, but as the longest living species on
earth, they give us a link between the past, present and future. It is critical that
woodlands, rainforests and trees in urban settings, such as parks, are preserved
and sustainably managed across the world.
The canopies of trees act as a physical filter, trapping dust and absorbing
pollutants from the air. Each individual tree removes up to 1.7 kilos of pollutants
every year. They also provide shade from solar radiation and reduce noise. Trees
absorb carbon dioxide as they grow and the carbon that they store in their wood
helps slow the rate of global warming.
They reduce wind speeds and cool the air as they lose moisture and reflect heat
upwards from their leaves. It is estimated that trees can reduce the temperature in
a city by up to 7°C. Trees also help prevent flooding and soil erosion, absorbing
thousands of litres of stormwater.
Trees host complex microhabitats. When young, they offer habitation and food to
large communities of birds, insects, lichen and fungi. When ancient, their trunks
also provide the hollow cover needed by species such as bats, woodboring beetles,
owls and woodpeckers. One mature tree can be home to as many as 500 different
species.