2.
B. Fill in the blanks.
1. The
layer of the atmosphere protects us from harmu
ultraviolet rays of the sun.
2. During the process of evaporation,
is formed
3. Mountaineers carry
cylinders.
4. Sand is an
impurity.
5.
is used for purifying water.
Answers
Answered by
2
Answer:
please question ack properly
Answered by
1
Answer:
1. Ozone
2. during evaporation vapours are formed
3. The air pressure will be low in high altitudes, causing difficulty in breathing, so they carry oxygen cylinders.
4. sand is an impure substance because it contains so many other particles in it.
5. Chlorine is used for purification of Water
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