State whether these sentences are true (T) or false (F):
Some rivers are perennial while others are seasonal.
Some of the famous peninsular rivers include Kaveri, Narmada, Tapi, Krishna, Mahanadi and Godavari.
The bedrocks of these rivers are hard, and not easily erodible. They are perennial in nature, flow throughout the year. They are seasonal and non-perennial so may not flow throughout the year.