Question

OXFORD CONVENT SCHOOL KHERA KHURRAMPUR
MID TERM EXAM: SEP 2020 CLASS:XI SUB ENGLISH
TIME: 2 Hours
mm 80
Q1. Read the following paragraph and answer the questions:
2x5=10marks
Our earth is like a greenhouse, with are difference Agreenhouse is encased in
glass while the earth is encased in a thick blanket of carbon dioxide. This
carbon dioxide serves the same function for the earth as does glass for
greenhouse effect.
The amount of carbon dioxide in the air is only.03 petant, yet all plant and
animal life depends on it. The percentage of carbon dioxide in the air is kept
almost constant by a series of natural process, We call it the carbon cycle.
Carbon dioxide is added to the atmosphere by two main processes - breathing
and burning. All living things breathe out carbon dioxide into the atmosphere.
The air breathed in contains only .03 per cent carbon dioxide, whereas the air
breathed out contains 4 percent. Thus breathing leads to an increase in the
amount of carbon dioxide in the air. Also large quantities of carbon dioxide are
produced by the burning of wood, coal and oil.
The main way in which carbon dioxide is removed from the atmosphere is by
photosynthesis it is a process by which green plants with the help of sunlight,
break up carbon dioxide into carbon and oxygen. Carbon dioxide is retained by
the plants as their food, and they set free oxygen for the use of animals. All
animals depend, directly of indirectly, on plants for their food. And all plants,
in turn, depend on carbon dioxide breathed out by animals.
1) How does the earth differ from a greenhouse?
2)what is the normal percentage of carbon dioxide in the air ?
3)What factors add to the amount of carbon dioxide in the air ?
4)Name two of the things that take up carbon dioxide from the atmosphere?
5)Suggest a suitable title for the passage​

Answer 1

Answer:

jakansbsbkwajjs

Explanation:

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