Question

of the earth
membering and Understanding Skills
Fill in the blanks with appropriate words,
(a) The atmosphere is held in its place due to the
(b) Weather phenomena take place in the
(c) The layer of the atmosphere which is considered safe to fly aeroplanes is.
(a) This is the gas that facilitates photosynthesis:
EXERCISES
layer saves us from harmful ultraviolet
rays.
reflects radio waves back to the earth.
(ii) carbon dioxide. (iii) ozone.
(d) The
(e) The
Choose the correct answer.
(iv) nitrogen
(iii) troposphere.
(iv) stratosphere.
(iv) thermosphere
.
(i) hydrogen.
(b) The lowest layer of the atmosphere is the
(i) thermosphere.
(ii) ionosphere.
c) The ozone layer exists in the
(i) troposphere.
(ii) stratosphere (iii) mesosphere
d) Meteors burn out due to friction of the atmosphere in this
(i) exosphere.
(ii) mesosphere.
(iii) ionosphere.
e) Temperature increases rapidly in the
(i) mesosphere.
(ii) stratosphere. (iii) thermosphere. (iv) exosphere.
(iv) troposphere
.​

Answer 1

Answer:

a. I don't know sorry

b. also don't know

c. ozone

d. oxygen and carbondioxide

ozone layer save us from ultraviolet rays.

iii) ozone