We will be happy to help you if you provide us with a question to answer :)
Cause is the reason that something happens and effect is the result of something happening
B) Ed Yost is the pilot that conducted the famous flight
Primary sources, for example, are witnesses. If there was a witness to a murder, they would be considered a primary source because they can give the police a first hand view of what happened. Published research, newspaper articles, and other media would be secondary sources as they are not at the event but just commentating and/or making observation from what they can tell from videos and gossip. Let me know if you have any more questions.
4 qts are in a gallon. i’m not sure what you mean by equation though