Doubtnut is the perfect NEET and IIT JEE preparation App. Get solutions for NEET and IIT JEE previous years papers, along with chapter wise NEET MCQ solutions. Get all the study material in Hindi medium and English medium for IIT JEE and NEET preparation ...
The amount of oxygen keeps on decreasing as the altitude increases. The amount of oxygen starts decreasing as the man starts climbing up the hill. As the level of oxygen starts decreasing, the man is unable to breathe in the required amount of oxygen into the blood. In response to the dec...
The greenhouse effect is a natural process that maintains the temperature of the earth. But when the number of greenhouse gases increases in the atmosphere, it results in a phenomenon known as global warming, which is one of the major problems that the world is facing today. We will discuss ...