<h3>A. Some or all have been united at different times.</h3>
Answer:
Earthquakes
Explanation:
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D, winter.... summer.
In the northern and southern hemispheres, seasons are opposite from one another. Summer would be opposite to winter. Since both A and C list the seasons as staying the same and B lists spring as opposite to winter... D is the correct answer.
Answer: C. every ecosystem in the area
Explanation:
1. Tectonic
2. Subtropical
3. Aborigine
4. Desalination