Question

i) Health problems due to______ pollution are also called as sick building syndrome. (ii) Silicosis is an _____disease. (iii) Concentration of Carbon dioxide and methane etc gases in atmosphere causes ______. (iv) The conditions of environment are greatly affected by______. (v) Refrigerants used in our homes are made in _____. (vi) Depletion of ozone layer and______are global environmental problems. (vii) The best known unit of measurement of sound is _______. (viii) Tsunami’s are never caused due to_______. (ix) Substances like tobacco and pan masala cause pollution in our ______environment. (x) ______ may cause cataract and cancer when it reaches on the earth.​

Answer 1

Answer: i)air, ii)lung iii)fossil fuel iv) pollution v) factory vi) increase vii)dB

viii)earthquake ix) nature x) muscular degenration