<span>Seafloor spreading is caused by diverging plates. </span>
-Fold: bend in the rock strata
-Joint: a break of natural origin
-Fault: a crack in the Earth’s crust
-Syncline: forms when rocks are compressed
-Anticline: arch-shaped fold, oldest beds are at core
In most cases, as altitude increases, the air in the troposphere cools. Vertical mixing occurs as a result of warm air rising. However, a layer of cool air may form beneath a layer of warm air on occasion. Temperature/thermal inversion refers to this deviation from normal temperature.
When an inversion occurs, polluted areas (such as London and Donora PA) experience unhealthy air and an increase in smog because pollutants are trapped at ground level rather than circulating away.
Decrease pesticide use
<span>develop "cleaner" pesticides
increase organic farming</span>
<span>C. Mercator projection</span><span>
The four tools that mapmakers uses in order to help reader interpret information on maps are:
=> Direction - This is where they give the direction on the map. Where to find the North, South, East and West.
=> Legend – This is where they give symbols on a map in order to depict meaning of a certain object written in a Map
=> Title – This is the most essential feature of the map. The content of the title should also be measured regarding to the lettering used.
=> Diagram – This is where neatlines, locater maps, insert maps and index maps are indicated.</span>
