ICSE Class 9 Answered
Give reasons:(a) People climbing to higher altitudes may suffer from dizziness and unsteady vision.
(b) Limewater is used in most of the experiments on respiration.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
(a) People climbing to higher altitudes may suffer from dizziness and unsteady vision due to air sickness, which occurs due to lack of oxygen.
(b) Freshly prepared limewater is used in most of the respiration experiments as carbon dioxide is released during respiration, which turns limewater milky. This serves as an indicator to demonstrate experiments on respiration.
Answered by | 04 Jun, 2014, 03:23: PM
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