a) The Senate advises the President and the House can impeach the President.
c)If both President and Vice President should die, the Speaker of the House becomes President.
e)The Speaker of the House appoints the president of the Senate.
Explanation:
The Senate can not initiate an impeachment process, this is an exclusive power of the House. However, it is the duty of the Senate to judge and consider whether the President (or any other politician) should be removed from office or not.
In the absence of the president and the vice president, who assumes is the President of the Federal Legislative House that represents the people, which is the House of Representatives.
Once the chairman of the House of Representatives is chosen, he decides who will chair the Senate.
By creating another frontline for Germany, the Allies basically forced Germany to split up their forces, weakening their already losing campaign against the Soviets.