Answer:
Serengeti is the answerrr
Many observations provide a history that one may be able to surmise theories from.
the world's current population is 7.3 billion and the world population in 1915 was 1.8 billion. The increase over the past century is 7.3 billion - 1.8 billion = 5.5 billion. So, the correct answer would be "more than 5 billion" (option D).
The answer is C. Earth's tilt and orbit. Hope I helped!
