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Dissolved oxygen (O₂) levels in water are critical for assessing organic pollution. The biochemical oxygen demand (BOD) test, which measures the amount of oxygen consumed by microorganisms in decomposing organic matter, is a key indicator of water quality and pollution levels.
Polyembryony is useful in the propagation of
FRI ( forest research institute ) was established is located at
Domestication of sheep started during
The Normal lapse rate is ________’ C per Km.
Due to deficiency of Zn causing Khaira disease in the rice field, the disease caused on the rice field appears __ ?
“Queen of milk” breed among the following goat breeds.
While reclaiming acid water in aquatic pond, how much lime is required?