Answer:
Correct answer is 4. Under 2.5 people per sq. mi. (VERY low density)
Explanation:
Option four is the correct because areas such as Sahara have a low density and are not populated. The conditions of living are not allowing people in these type of areas to create some larger permanent settlements. The similar case is for example in Australia where 3/4 is covered with desert, which is practically uninhabited. Or we can also created a parallel with Greenland which also has a low density due to climate factor.
A slow change to the earth's surface would be the formation of mountain ranges over millions of years due to the shifting of tectonic plates under the earth. Also, another slow change could be considered erosion or weathering. Two rapid changes could be landslides and earthquakes.
Pangaea means the continents once fit together like a puzzle to form one big continent
Answer: a
Explanation:
When deciding between nails and screws, keep in mind that nails are less brittle, so they provide greater shear strength. ... Screws, on the other hand, may not be as forgiving, but their threaded shafts hold better in wood and draw boards together much more tightly and they have greater tensile strength.
