Assertion (A): In the common domestic circuit, the earth wire is connected to a metallic plate buried deep inside the earth. Reason (R): Earth wire ensures that any leakage of current to the metallic body of the appliance keeps its potential to that of the earth, so the user may not get a severe electric shock.
Assertion (A): Food web is a network of several food chains operating in an ecosystem. Reason (R): Food web decreases the stability of an ecosystem.
Match the Column-I with Column-II and choose the correct option from the following:
In the 17th century the city El Dorado in South America became famous as which one of the following?
Choose the correct option related to the regional political parties of India:
Choose the correctly matched pair:
How is the brain protected in our body?