Even though I had planned to go skiing with my friends, I had to ______ at the last moment because of an injury.Select the most appropriate option to complete t...

A trapezium has vertices marked as P, Q, R and S (in that order anticlockwise). The side PQ is parallel to side SR. Further, it is given that, PQ = 11 cm, QR...

Mosquitoes pose a threat to human health. Controlling mosquitoes using chemicals may have undesired consequences. In Florida, authorities have used geneticall...