Question

Another result of the Ice Age was:

a. An enhanced ability to migrate because areas formerly separated by seas became accessible over ice.
b. A great increase in the number of large animals because they could take refuge in areas too cold for humans.
c. A reduction in the genetic variations between various human societies because they were no longer isolated.
d. A dramatic increase in the total population of humans over the globe, due to improved techniques for hunting large animals.

Answer 1

During the Ice Age, the formation of land bridges due to falling sea levels enhanced human and animal migration, allowing previously separated areas to become accessible.

Step-by-step explanation:

During the Ice Age, the Earth's climate cooled significantly, leading to lower sea levels as a large amount of water became trapped in glaciers. This phenomenon created land bridges, such as the one between Asia and North America, which facilitated the migration of animals and human populations. As a result, an enhanced ability to migrate would be the correct answer. Areas that were previously separated by seas became accessible over ice, leading to various species, including humans, moving to new territories that were previously unreachable.

The reduction in sea levels also likely played a substantial role in enabling early humans to move into different parts of the world, as seen with their expansion into areas like maritime Southeast Asia, Japan, and Australia. This migration and expansion of the human species during the Ice Age had profound long-term effects on human evolution and the distribution of genetic diversity.