When Jacob told his sons to return to Egypt, Judah told his father that they could not return to Egypt without .

Benjamin

Explanation:

In the first mission to go and look for food during the time of famine, the ten sons of Jacob went and found their brother serving in Egypt. They were given conditions that in case they were to go back, they should come back with their brother Benjamin. However, when Jacob was told by Judah that they should go with Benjamin back to Egypt, he was reluctant at first to let him also go. This account is found in Genesis chapter 43

wind moving at higher speeds will transfer more energy to the water, resulting in stronger waves.