Fossils do tell a lot about Earth's past landscape. Age of rocks , species of animal in the past era, etc. But there are various aspects that they fail to answer. While fossils reveal what ancient living things looked like, they keep us guessing about their color, sounds, and most of their behavior. Fossils are very rare.The Fossil record is like a big jigsaw puzzle, with most of the pieces missing. Many species probably left no fossils at all.
As Alexander von Humboldt surveyed and observed the far and distant lands of the South American continent he found that the species of plants and animals to be well distributed in higher latitudes and this shift in the plant species was caused by the rise of temperatures in lakes and seas.
Thus the species that became extinct were ones that could not adapt and find a suitable habitat for the development and growth and thus found distributed at greater altitudes.
After the study came in 1935 and the showed the distribution of plants and animals til 2005, the western united states had most of the plants i.e 72% distributed in lower altitudes as these plants species adapted to the low lying areas as due to the desert and dry conditions that developed in that year.
Pull factors “pull” people to a new home and include things like better opportunities. The reasons people migrate are usually economic, political, cultural, or environmental.
