CBSE Class 9 Answered
(a) List the causes that affect the life forms found in water bodies in various ways.
(b) Name the element present in coal other than carbon that releases harmful gases during combustion of coal.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
(a) (i) Excess of fertilizers and pesticides used in the farms are washed into water bodies.
(ii) Dumping of sewage from dwelling places into water bodies.
(iii) Release of hot water and contaminated water from industries.
(iv) Release of water from dams affect the temperature of river.
(b) Sulphur and nitrogen.
Answered by | 04 Jun, 2014, 03:23: PM
Concept Videos
CBSE 9 - Biology
Asked by surajdabas414 | 14 Nov, 2023, 03:08: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by nikhilmgs1234 | 18 Mar, 2021, 08:30: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by chandujm1984 | 13 Dec, 2019, 07:55: AM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by Topperlearning User | 28 Nov, 2013, 09:14: AM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by Topperlearning User | 21 Mar, 2016, 02:03: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by Topperlearning User | 27 Apr, 2016, 08:02: AM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERTCBSE 9 - Biology
Asked by Topperlearning User | 27 Apr, 2016, 07:59: AM
ANSWERED BY EXPERT
