According to the Beringa Land Bridge theory, why were the ocean levels low enough to allow prehistoric humans to cross from Asia to North America on dry
land? *
Eurasia
Beringa
North America

What explains the increase in life expectancy in botswana? a. the increased availability of jobs and an improved economy b. access to antiretroviral drugs, hiv/aids education, and widespread hiv/aids testing c. a series of military takeovers that stabilized the political system and led to education reform and increased literacy rates d. a recent military coup that led to an improved healthcare system select the best answer from the choices provided.