Answer: I believe it is “There were significant changes in scientific knowledge about planets”
Explanation: Since scientific knowledge has grown about planets, Pluto doesn’t fit some descriptions in order to be classified as one.
The answer for sure is A arctic circle
It is showing the most populated areas at that time range
Answer:
adaptation
Explanation:
The exact definition of adaptation is :
the process of change by which an organism or species becomes better suited to its environment.
This is basically what the question says and I therefore believe this is the answer
Hope this helped and have a good day
