Question

Cold temperatures during the Late Pleistocene led to lower sea levels as a result of glaciers trapping significant amounts of water. This decrease in sea levels exposed landshelves and allowed modern humans to migrate to previously uninhabited continents. Identify the continents to which early modern humans were able to migrate due to low sea levels.

Answer 1

Low sea levels during the Late Pleistocene exposed land bridges in maritime Southeast Asia and the Beringia land bridge between Asia and North America, enabling human migrations to Australia and the Americas.

Step-by-step explanation:

Migration of Early Modern Humans Due to Low Sea Levels

During the Late Pleistocene, significant climate changes vastly impacted the Earth and its inhabitants. The onset of an ice age caused global temperatures to drop, leading to the formation of extensive glaciers that trapped water and consequently lowered sea levels. This geological transformation exposed land bridges previously submerged under the sea, creating accessible routes for human and animal migrations to previously isolated continents.

Specifically, early modern humans (Homo sapiens) took advantage of these lower sea levels to migrate across what is now maritime Southeast Asia and into Australia. There, they established societies on land that is currently submerged or separated into islands. Simultaneously, a considerable land bridge known as Beringia emerged between modern-day Russia and Alaska, which allowed humans to migrate from Asia to North America. Although the exact timing is still debated, it's likely that these migrations occurred when the last glaciation period was at its peak, about eighteen thousand years ago.

As Earth's climate eventually warmed and the ice melted, sea levels rose again, submerging land bridges and reshaping the world's coastlines and inland waterways. This brought about ecological opportunities as well as challenges, leading to the adaptation and isolation of various human groups.

Answer 2

Africa to Middle east to Asia and to Oceania and then to Eurasia and to America.

Step-by-step explanation:

• The human migration started around 2 million years ago form the continent of Africa, the early humans crossed the land bridges that were covered by water.

• The population of the early homo sapiens migrated to Europe between the 130,000 and 115,000 million years ago. Reaching china through the nile valley and heading to the middle east into modern Israel by the Strait on the Red Sea at the time sea level was much lower and narrow.

• The migration continued through Asia to the southeastern coast and entering the Australia 50,000 years ago. At the time of the last glacial maximum. Also, the coastal population around the southeast Asia grew with the dispersal of the humans giving rise to the old and the new world i.e America.

• Paleo Indians emerged for central Asia crossing the Beringia land bridge between the eastern Siberia and present-day Alaska. Continued by the end of the last glacial peroid i.e 23,000 years BP.