Some researchers believe that H. rudolfensis was a separate species that was contemporaneous with
A. Ardipithecus.
B. H. habilis.
C. H. sapiens.
D. Gigantopithecus.
E. Au. anamensis.
Question 2
Analysis of large samples of human mitochondrial DNA has led some researchers to hypothesize that
A. all modern humans are descended from Neandertals in Western Europe.
B. all current human mitochondrial DNA comes from one woman who lived in Africa some 200,000 years ago.
C. all modern humans are descended directly from chimpanzees and gorillas, but not from orangutans.
D. all modern humans are not descended from robust australopithecines.
E. all H. erectus populations around the world eventually evolved into populations of H. sapiens.
The functions of species richness.
Large numbers of plant species can flower at once in this grassland in Kinsella, Alberta.
These species are all at risk of extinction. Species with slow life-h
Species
Average Number of Hours Slept per Day by Various Mammalian Species
Some threatened and endangered species