Osmoregulation is control over the
1). Removal of nitrogen from the body
2). Concentrations of salt and water in the body
3). Osmotic properties of cell membranes
4). PH of the blood
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1. Supersonic Jet causes pollution by thinning of
3. Which of the following was to be discovered first in the chromospheres of the sun?
4. Which of the following is riot a greenhouse gas ?
5. Which of the following is a renewable source of energy ?
6. Which one of the following is a microelement?
7. Which mineral is the ore Of aluminium?
8. Cryogenics is a science dealing with
9. The device used to change the speed of an electric fan is