Ais a stream or river that flows into a larger stream or river.

I think the word you want is a tributary.

The smaller steam is a tributary of the larger one.

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.

the answer is c i just put d and i got it wrong so yeah its d