Question

J. AUDOSphere. The aim LaL CUveis LIL
atmosphere
46 Biogeochemical cycle. The cycling of main elements/substances such
and water in an ecosystem and ultimately in biosphere is known as the
cycle. The transfer and circulation of these substances takes ole
water, air and living organisms.
5. Ozone. A molecule containing three atoms of oxygen with a formula of 0.
ozone.
ts/substances such as C.N.O.
nown as biogeochemica
ances takes place through so
QUESTIONS-ANSWERS
4.1. THE BREATH OF LIFE: AIR
Q. 1. What are the two things which are essential for all forms of life oni
arth?
Ans. (i) The three resources-the land, the water and the air available on the ea
(ii) The energy which is provided by the sun.
Q. 2. What is biosphere?
Ans. The life-supporting zone of the earth where the atmosphere, the hydrosphere
mal life is known as the hiosnhere​

Answer 1

Answer:

${a}^{2} + {b }^{2} = 2ab$