Question

LIIUL
thful
3 (e) Gases
the ozone layer
6. True or false ?
char
thin
cha
(a) Land and soil are the same thing
water.
G
25 cm thick layer of soil.
(d) Radon is used in decorative lights
in
(b) The water in a lake is called gron
(c) It takes about 1000 years to fom​

Answer 1

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