Answer
False
Explanation
In a demographic equation is a mathematical model that determines changes in population by taking births minus deaths plus the amount of migration to the demographic area. The estimate is simply on the increase or decrease in population by adding the number of births plus the net migration to the previous numbers then subtracting the number of deaths.
The construction is aqueducts
The most active volcanoes are located in South America and the bottom of North America
Contour lines determine the steepness of the land by how close they are together. Generally, contour lines rise to a particular scale (e.g. a line for every ten metres), therefore, if the contour lines are closer together then the height of that particular area has risen more steeply than if the contour lines are further apart where the steepness has increased more gradually.
