Answer:
The major criterion used to measure the distinctive civilization found in Cordova is
Depth of the Dark Ages
Answer: consumers would soon run out of food?
Three elements need to be present in an ecosystem to work - producers, consumers, and decomposers. The producers would produce, consumers to consume what is produced and decomposers to decompose.
If there were no producers, it would create a void at the beginning of the food chain, preventing it from functioning. Consumers would soon run out of food. They would starve and soon may die unless they could move to another habitat.
I'm pretty sure it's B and C.
(((SHORT EXPLAINATION)))
Thomas Jefferson bought 800,000 miles worth of land from the French, (West of the Mississippi River)
Mexico was given up I'm pretty sure out of fear - and they gave the U.S. Califoria sometime too.
Hope this helps!
