Answer:
ill explain on the bottom
Explanation:
Disadvantages of Choropleth Maps
Although choropleths give a good visual impression of change over space there are certain disadvantages to using them:
They give a false impression of abrupt change at the boundaries of shaded units.
Choropleths are often not suitable for showing total values. Proportional symbols overlays (included on the choropleth map above) are one solution to this problem.
It can be difficult to distinguish between different shades.
Variations within map units are hidden, and for this reason smaller units are better than large ones.
Isopleth maps
Isopleth maps differ from choropleth maps in that the data is not grouped to a pre-defined unit like a city district. These maps can take two forms:
Lines of equal value are drawn such that all values on one side are higher than the "isoline" value and all values on the other side are lower, or
Ranges of similar value are filled with similar colours or patterns.
This type of map is ideal for showing gradual change over space and avoids the abrupt changes which boundary lines produce on choropleth maps. Temperature, for example, is a phenomenon that should be mapped using isoplething, since temperature exists at every point (is continuous), yet does not change abruptly at any point (like population density may do as you cross into another census zone). Relief maps should always be in isopleth form for this reason.
Answer:
The oldest rocks of the oceanic crust are found in deep ocean trenches far away from active mid-ocean ridges.
Explanation:
Beginning in the late 1940s, oceanic expeditions continued to map the Atlantic ocean floor using new equipment and collecting thousands of rock samples. These works made it possible to map a gigantic system of submarine mountain ranges, called meso-ocean ridges. By perfecting the method of dating rocks, scientists have been able to determine the true age of seabed rocks. They found that the closer to the mid-ocean ridge the rocks were much younger than imagined, while rocks close to the continents were increasingly older, thus corroborating the Continental Drift.
Three potential careers for geographers include:
Cartographer (mapmaker)
Environmental consultant (ensure governments meet guidelines for environment safety when building cities)
Town planner (develop cities, towns, and rural areas)
The Northwest Territories could apply for statehood with the Confederation when each of their populations reached 60,000 free inhabitants, including women.
<h3>What does applying for statehood mean under the Northwest Ordinance?</h3>
It stated that each district would be eligible for statehood whenever its population matched that of the least populated current state and that each district would be able to send one representative to Congress once it reached a population of 20,000. (The Regulation of 1787 replaced this ordinance.)
Its name was changed to the Northwest Ordinance and it established a way for the territories northwest of the Ohio River, which included what would eventually become the states of Illinois, Indiana, Michigan, Ohio, Wisconsin, and a portion of Minnesota, to become independent states.
To know more about Northwest Ordinance refer to: brainly.com/question/18881838
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