What is the theory proposed by Relethford called?
a. Mostly out of Africa
b. Complete replacement
c. Partial replacement
d. Regional
e. Complete
Question 2
According to Partial Replacement Models, modern humans first appeared in Africa
a. and interbred with premodern populations of Eurasia, thus partially displacing them.
b. and remained there until modern humans from Asia displaced them.
c. about 500,000 years ago.
d. but were later displaced by European Neandertals.
e. gave rise to several subspecies in Africa, Europe, and Asia.
The endosymbiosis theory
Wood first appeared in plants called progymnosperms.
A cheetah strangling an impala, Timbavati Game Reserve, South Africa
Swanson’s Theory of Caring
Only 750 mountain gorillas remain in two tiny forests in East Africa.
Detonation is a secondary ignition of the air–fuel mixture. It is also called spark knock or ...