What is hybrid vehicle technology? Expalin is advantages with a suitable example?</h2></div>

In which one of the following, the BOD (Biochemical Oxygen Demand) of sewage (S), distillery …

"BOD is commonly calculated as an index of water pollution."<br> (a) Do you agree with this statement ? …

What are the agents that bring about such an undesirable change (pollution) are called?

What is reforestation?</h2></div>

Which award is given to the individuals or communities from rural areas that have shown a significant contribution and d…

Study the lists and find the correct match.<table class="wysiwyg-table"><tbody><tr><td&gt…

As an athelete is running a 5 kilometer race, his cells need more oxygen. Which change will help his body meet the incre…