Why would the mouth of a river contain more water than the mouth of one of its tributaries?

The largest internal organ in the frog is the

Which anatomical feature would you expect to find in the fossil remains of a nocturnal species?

All of the following actions are examples of civil disobedience, except a.) refusing to pay an unfair tax b.) refusing to use government services c.) participating in a protest march d.)planning a riot to destroy a government riot