In human, there is a possibility of ____ such as fever and headaches if there is exposure to the virus. 

There is strong evidence that the          of a father increases the probability that a youngster will use drugs and engage in criminal activity.

Even the experienced doctors dare not carry out the operation because of the         of failure.

.Has the Channel Tunnel improved the _______of goods between the British Isles and mainland Europe?

She got married although her parents had not given her their _____.