Questions

Nucleus serves as the control center for cell metabolism and reproduction.

Excessive use of nitrate including manure may be responsible forthe presence of toxic substance in groundwater. Phosphate can also enter the groundwater via excessive use of fertilizers. High application rates of nitrogen containing fertilizers combined with the high-water solubility of nitrate, leads to increased runoff into surface water as well as leaching into groundwater, thereby causing groundwater pollution.

Only a fraction of the nitrogen-based fertilizers, is converted to produce and other plant matter. Nitrate pollution in groundwater comes from pit latrines, it can cause blue baby syndrome.

Yes, the given statement that water is more dense than cooking oil is TRUE as water more denser than oil it is sinked when it is poured in oil.

Manas National Park or Manas Wildlife Sanctuary is a national park, UNESCO Natural World Heritage site in Assam is known for Elephants. It is located in the Himalayan foothills.

The Chambal's lower course is lined by belt of badland gullies resulting from accelerated soil erosion and is the site of a major projectin soil conservation.Chambal Project is a joint project from both Madhya Pradesh and Rajasthan government, which aims at harvesting the Chambal River for irrigation, power prevention and control of soil erosion in the valley