I think the answer to that question is d and a
Answer:The Republican nominee, former vice president Richard Nixon, defeated the Democratic nominee, incumbent vice president Hubert Humphrey. Analysts have argued the election of 1968 was a major realigning election as it permanently disrupted the New Deal coalition that had dominated presidential politics since 1932.
Answer: A large amount of energy is lost at each level, so there has to be a limit on the number of trophic levels.
Explanation:
Fish and it was a new land. About 20000 people then to migrate there