Answer:
It's either A or C, I think it's A
Explanation:
migration rates,birth rates and death rates are all ways to measure changes in the population?
All of the states of the USA are north of the equator.
So are all the states of Mexico.
Example picture for a valley
Explanation:
A valley formed by flowing water, called fluvial valley or river valley, is usually V-shaped. The exact shape will depend on the characteristics of the stream flowing through it. Rivers with steep gradients, as in mountain ranges, produce steep walls and a bottom.
here is this off google hope this helps you
: Pericles brought the city-states of the Delian League, which was established around 478 BC, under the leadership of Athens. Among Pericles' other accomplishments was the commissioning of many of the architectural wonders of Classical Athens, including the Parthenon, which was built between 447 and 432 BC.