An oligarchy can include representative democracy because in some countries people can vote in them.
Answer:
I thing it is expressed powers
Answer: Ecosystems are all found with each other;
Explanation:
Ecosystems are not isolated from each other but split from each other, most ecosystems are very big and cover a large amount of land so when another ecosystem is around it is seen to be together. Ecosystems merge together but still keep within their own land, this is why you might find certain animals in different ecosystems than the one they are from. Hope this helps!
